diff --git a/libs/modelParser.js b/libs/modelParser.js
index 0a67f21d0..ef92ab08b 100644
--- a/libs/modelParser.js
+++ b/libs/modelParser.js
@@ -223,6 +223,8 @@ var parseScript = function (aScript) {
 
   var updateURL = null;
   var updateUtf = null;
+  var updateURLForceCheck = process.env.FORCE_BUSY_UPDATEURL_CHECK === 'true';
+
   var downloadURL = null;
   var downloadUtf = null;
   var rAnyLocalScriptUrl = new RegExp(
@@ -442,50 +444,73 @@ var parseScript = function (aScript) {
   }
 
   // Update Url
-  if (process.env.FORCE_BUSY_UPDATEURL_CHECK === 'true') {
-    // `@updateURL` must be exact here for OUJS hosted checks
-    //   e.g. no `search`, no `hash`
-
-    updateURL = findMeta(script.meta, 'UserScript.updateURL.0.value');
-    if (updateURL) {
-      // Check for decoding error
-      try {
-        updateUtf = decodeURIComponent(updateURL);
-
-      } catch (aE) {
-        script.hasInvalidUpdateURL = true;
-        script.showSourceNotices = true;
-
-      } finally {
-        if (!script.hasInvalidUpdateURL)  {
-
-          // Validate `author` and `name` (installNameBase) to this scripts meta only
-          matches = updateUtf.match(rAnyLocalMetaUrl);
-          if (matches) {
-            if (script.authorSlug.toLowerCase() + '/' + script.nameSlug === matches[1].toLowerCase() + '/' + matches[2])
-            {
-              // Same script
-            } else {
-              script.hasInvalidUpdateURL = true;
-              script.showSourceNotices = true;
-            }
+  // `@updateURL` must be exact here for OUJS hosted checks with updateURLForceCheck
+  //   e.g. no `search`, no `hash`
+
+  updateURL = findMeta(script.meta, 'UserScript.updateURL.0.value');
+  if (updateURL) {
+    // Check for decoding error
+    try {
+      updateUtf = decodeURIComponent(updateURL);
+
+    } catch (aE) {
+      script.hasAlternateUpdateURL = true;
+      script.hasInvalidUpdateURL = true;
+
+      script.showSourceNotices = true;
+      script.showSourceNoticesCritical = true;
+    } finally {
+      if (!script.hasInvalidUpdateURL)  {
+        // Validate `author` and `name` (installNameBase) to this scripts meta only
+        matches = updateUtf.match(rAnyLocalMetaUrl);
+        if (matches) {
+          if (script.authorSlug.toLowerCase() + '/' + script.nameSlug ===
+            matches[1].toLowerCase() + '/' + matches[2])
+          {
+            // Same meta
           } else {
-            // Allow offsite checks
-            updateURL = new URL(updateURL);
-            if (rSameOrigin.test(updateURL.origin)) {
-              script.hasInvalidUpdateURL = true;
-              script.showSourceNotices = true;
+            script.hasAlternateUpdateURL = true;
+            script.hasInvalidUpdateURL = (
+              updateURLForceCheck
+                ? updateURLForceCheck
+                : script.hasInvalidUpdateURL
+            );
 
-            }
+            script.showSourceNotices = true;
+            script.showSourceNoticesCritical = updateURLForceCheck;
+          }
+        } else {
+          // Allow offsite checks
+          updateURL = new URL(updateURL);
+          if (rSameOrigin.test(updateURL.origin)) {
+            script.hasAlternateUpdateURL = true;
+            script.hasInvalidUpdateURL = (
+              updateURLForceCheck
+                ? updateURLForceCheck
+                : script.hasInvalidUpdateURL
+            );
+
+            script.showSourceNotices = true;
+            script.showSourceNoticesCritical = true;
+          } else {
+            script.hasAlternateUpdateURL = true;
+
+            script.showSourceNotices = true;
           }
         }
       }
-    } else {
-      if (!script.isLib) {
-        // Don't serve the script anywhere in this mode and if absent
-        script.hasInvalidUpdateURL = true;
-        script.showSourceNotices = true;
-      }
+    }
+  } else {
+    if (!script.isLib) {
+      // If updateURLForceCheck is true don't serve the script anywhere in this mode and if absent
+      script.hasInvalidUpdateURL = (
+        updateURLForceCheck
+          ? updateURLForceCheck
+          : script.hasInvalidUpdateURL
+      );
+
+      script.showSourceNotices = updateURLForceCheck;
+      script.showSourceNoticesCritical = updateURLForceCheck;
     }
   }
 
diff --git a/views/includes/scriptList.html b/views/includes/scriptList.html
index c2f46e150..8ed937a52 100644
--- a/views/includes/scriptList.html
+++ b/views/includes/scriptList.html
@@ -15,6 +15,7 @@
     <tr class="tr-link">
       <td>
         {{#showSourceNotices}}<span class="pull-right"><i class="fa fa-fw fa-exclamation-triangle" title="Source Code notices"></i></span>{{/showSourceNotices}}
+        {{#showSourceNoticesCritical}}<span class="pull-right"><i class="fa fa-fw fa-exclamation-circle" title="Critical Source Code notices"></i></span>{{/showSourceNoticesCritical}}
         {{#_issueCount}}<span class="pull-right"><a href="{{{scriptIssuesPageUri}}}/open" title="Open issue discussions"><i class="fa fa-fw fa-commenting"></i>{{_issueCount}}</a></span>{{/_issueCount}}
         <span class="script-icon hidden-xs" {{#icon16Url}}data-icon-src="{{{icon16Url}}}" data-icon-size="16"{{/icon16Url}}>
           {{#isLib}}<i class="fa fa-fw fa-file-excel-o"></i>{{/isLib}}{{^isLib}}<i class="fa fa-fw fa-file-code-o"></i>{{/isLib}}
diff --git a/views/includes/scriptPageHeader.html b/views/includes/scriptPageHeader.html
index 7235d4ace..f20e8b1ff 100644
--- a/views/includes/scriptPageHeader.html
+++ b/views/includes/scriptPageHeader.html
@@ -2,17 +2,17 @@ <h2 class="page-heading">
   {{#isScriptPage}}
     {{^script.isLib}}
     <div class="btn-group pull-right">
-      <a href="{{{script.scriptInstallPageUrl}}}" class="btn btn-{{^script.showSourceNotices}}info{{/script.showSourceNotices}}{{#script.showSourceNotices}}warning{{/script.showSourceNotices}}">
+      <a href="{{{script.scriptInstallPageUrl}}}" class="btn btn-{{^script.showSourceNoticesCritical}}info{{/script.showSourceNoticesCritical}}{{#script.showSourceNoticesCritical}}danger{{/script.showSourceNoticesCritical}}">
         <i class="fa fa-download"></i> Install
       </a>
-      <button type="button" class="btn btn-{{^script.showSourceNotices}}info{{/script.showSourceNotices}}{{#script.showSourceNotices}}warning{{/script.showSourceNotices}} dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <button type="button" class="btn btn-{{^script.showSourceNotices}}info{{/script.showSourceNotices}}{{#script.showSourceNotices}}{{^script.showSourceNoticesCritical}}warning{{/script.showSourceNoticesCritical}}{{#script.showSourceNoticesCritical}}danger{{/script.showSourceNoticesCritical}}{{/script.showSourceNotices}} dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
         <span class="caret"></span>
         <span class="sr-only">Toggle Dropdown</span>
       </button>
       <ul class="dropdown-menu dropdown-menu-right">
         <li>
           <div class="btn-group btn-group-justified">
-            <a href="{{{script.scriptInstallPageXUrl}}}.min.user.js" class="btn btn-{{#script.showSourceNotices}}warning{{/script.showSourceNotices}}{{^script.showSourceNotices}}info{{/script.showSourceNotices}}" title="EXPERIMENTAL INSTALLATION FORKING"><i class="fa fa-fw fa-download"></i> Install {{#script.hasAlternateDownloadURL}}once {{/script.hasAlternateDownloadURL}} with minification</a>
+            <a href="{{{script.scriptInstallPageXUrl}}}.min.user.js" class="btn btn-{{#script.showSourceNotices}}{{^script.showSourceNoticesCritical}}warning{{/script.showSourceNoticesCritical}}{{#script.showSourceNoticesCritical}}danger{{/script.showSourceNoticesCritical}}{{/script.showSourceNotices}}{{^script.showSourceNotices}}info{{/script.showSourceNotices}}" title="EXPERIMENTAL INSTALLATION FORKING"><i class="fa fa-fw fa-download"></i> Install {{#script.hasAlternateDownloadURL}}once {{/script.hasAlternateDownloadURL}} with minification</a>
           </div>
           {{#script.showSourceNotices}}
           {{> includes/scriptPageHeaderSourceNotices.html }}
@@ -26,17 +26,17 @@ <h2 class="page-heading">
   {{/isScriptPage}}
   {{#isScriptViewSourcePage}}
     <div class="btn-group pull-right">
-      <a href="{{{script.scriptRawPageUrl}}}" class="btn btn-{{^script.showSourceNotices}}info{{/script.showSourceNotices}}{{#script.showSourceNotices}}warning{{/script.showSourceNotices}}">
+      <a href="{{{script.scriptRawPageUrl}}}" class="btn btn-{{^script.showSourceNoticesCritical}}info{{/script.showSourceNoticesCritical}}{{#script.showSourceNoticesCritical}}danger{{/script.showSourceNoticesCritical}}">
         <i class="fa fa-file-{{#script.isLib}}excel{{/script.isLib}}{{^script.isLib}}code{{/script.isLib}}-o"></i> Raw Source
       </a>
-      <button type="button" class="btn btn-{{^script.showSourceNotices}}info{{/script.showSourceNotices}}{{#script.showSourceNotices}}warning{{/script.showSourceNotices}} dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <button type="button" class="btn btn-{{^script.showSourceNotices}}info{{/script.showSourceNotices}}{{#script.showSourceNotices}}{{^script.showSourceNoticesCritical}}warning{{/script.showSourceNoticesCritical}}{{#script.showSourceNoticesCritical}}danger{{/script.showSourceNoticesCritical}}{{/script.showSourceNotices}} dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
         <span class="caret"></span>
         <span class="sr-only">Toggle Dropdown</span>
       </button>
       <ul class="dropdown-menu dropdown-menu-right">
         <li>
           <div class="btn-group btn-group-justified">
-            <a href="{{{script.scriptRawPageXUrl}}}" class="btn btn-{{#script.showSourceNotices}}warning{{/script.showSourceNotices}}{{^script.showSourceNotices}}info{{/script.showSourceNotices}}" title="EXPERIMENTAL"><i class="fa fa-file-{{#script.isLib}}excel{{/script.isLib}}{{^script.isLib}}code{{/script.isLib}}-o"></i> Minified Source</a>
+            <a href="{{{script.scriptRawPageXUrl}}}" class="btn btn-{{#script.showSourceNotices}}{{^script.showSourceNoticesCritical}}warning{{/script.showSourceNoticesCritical}}{{#script.showSourceNoticesCritical}}danger{{/script.showSourceNoticesCritical}}{{/script.showSourceNotices}}{{^script.showSourceNotices}}info{{/script.showSourceNotices}}" title="EXPERIMENTAL"><i class="fa fa-file-{{#script.isLib}}excel{{/script.isLib}}{{^script.isLib}}code{{/script.isLib}}-o"></i> Minified Source</a>
           </div>
           {{#script.showSourceNotices}}
           {{> includes/scriptPageHeaderSourceNotices.html }}
diff --git a/views/includes/scriptPageHeaderSourceNotices.html b/views/includes/scriptPageHeaderSourceNotices.html
index 27f529536..1273dade4 100644
--- a/views/includes/scriptPageHeaderSourceNotices.html
+++ b/views/includes/scriptPageHeaderSourceNotices.html
@@ -1,22 +1,27 @@
 <div class="alert alert-warning" role="alert">
   {{#script.hasInvalidUpdateURL}}
     <p>
-      <i class="fa fa-fw fa-exclamation-triangle"></i> Invalid update target
+      <i class="fa fa-fw fa-exclamation-circle"></i> Invalid update target.
     </p>
   {{/script.hasInvalidUpdateURL}}
+  {{#script.hasAlternateUpdateURL}}
+    <p{{^isScriptViewSourcePage}} title="{{script.meta.UserScript.updateURL.0.value}}"{{/isScriptViewSourcePage}}>
+      <i class="fa fa-fw fa-exclamation-triangle"></i> Alternate update target.
+    </p>
+  {{/script.hasAlternateUpdateURL}}
   {{#script.hasInvalidDownloadURL}}
     <p>
-      <i class="fa fa-fw fa-exclamation-triangle"></i> Invalid download target
+      <i class="fa fa-fw fa-exclamation-circle"></i> Invalid download target.
     </p>
   {{/script.hasInvalidDownloadURL}}
-  {{#script.hasUnstableMinify}}
-    <p{{^isScriptViewSourcePage}} title="{{script.meta.OpenUserJS.unstableMinify.0.value}}"{{/isScriptViewSourcePage}}>
-      <i class="fa fa-fw fa-exclamation-triangle"></i> The script author suggests that minification of this script may be unstable.
-    <p>
-  {{/script.hasUnstableMinify}}
   {{#script.hasAlternateDownloadURL}}
     <p{{^isScriptViewSourcePage}} title="{{script.meta.UserScript.downloadURL.0.value}}"{{/isScriptViewSourcePage}}>
       <i class="fa fa-fw fa-exclamation-triangle"></i> Alternate download target.
     </p>
   {{/script.hasAlternateDownloadURL}}
+  {{#script.hasUnstableMinify}}
+    <p{{^isScriptViewSourcePage}} title="{{script.meta.OpenUserJS.unstableMinify.0.value}}"{{/isScriptViewSourcePage}}>
+      <i class="fa fa-fw fa-exclamation-triangle"></i> The script author suggests that minification of this script may be unstable.
+    <p>
+  {{/script.hasUnstableMinify}}
 </div>