diff --git a/lib/models/cylinder_viewmodel.dart b/lib/models/cylinder_viewmodel.dart
index fd93953..7e0a732 100644
--- a/lib/models/cylinder_viewmodel.dart
+++ b/lib/models/cylinder_viewmodel.dart
@@ -46,7 +46,7 @@ class CylinderViewModel {
       ]);
 
   String get rbPressure =>
-      sprintf("%d", [metric! ? rockBottom!.rockBottomPressure(cylinder!).bar.roundUp(5) : rockBottom!.rockBottomPressure(cylinder!).psi.roundUp(100)]);
+      sprintf("%d", [metric! ? rockBottom!.rockBottomPressure(cylinder!).bar.roundUp(10) : rockBottom!.rockBottomPressure(cylinder!).psi.roundUp(100)]);
 
   String get buoyancyAtPressure => metric!
       ? sprintf("%+.01f", [
@@ -83,6 +83,6 @@ class CylinderViewModel {
         ]);
 
   String get turnPressure => sprintf("%d", [
-        metric! ? rockBottom!.turnPressure(cylinder!).bar.roundUp(5) : rockBottom!.turnPressure(cylinder!).psi.roundUp(100),
+        metric! ? rockBottom!.turnPressure(cylinder!).bar.roundUp(10) : rockBottom!.turnPressure(cylinder!).psi.roundUp(100),
       ]);
 }
diff --git a/lib/models/rockbottom_model.dart b/lib/models/rockbottom_model.dart
index dea5ba5..25a2088 100644
--- a/lib/models/rockbottom_model.dart
+++ b/lib/models/rockbottom_model.dart
@@ -35,9 +35,15 @@ class RockBottomModel {
   double get depthAtm => (10 + depth.m) / 10;
   double get safetyStopAtm => (10 + settings.safetyStopDepth.m) / 10;
 
-  Volume get troubleSolvingVolume => VolumeL(settings.troubleSolvingDuration * settings.sacRate.l * settings.troubleSolvingSacMultiplier * depthAtm);
+  Volume get troubleSolvingVolume {
+    // Min gas trouble solving is calculated at the average depth for simplicity.
+    if (settings.principles == Principles.MINGAS) {
+      return VolumeL(settings.troubleSolvingDuration * settings.sacRate.l * settings.troubleSolvingSacMultiplier * avgAtm);
+    }
+    return VolumeL(settings.troubleSolvingDuration * settings.sacRate.l * settings.troubleSolvingSacMultiplier * depthAtm);
+  }
 
-  double get ascentDuration => (depth.m / settings.ascentRate.m).roundToDouble();
+  double get ascentDuration => (depth.m / settings.ascentRate.m).ceilToDouble();
 
   Volume get ascentVolume => VolumeL(ascentDuration * settings.sacRate.l * settings.ascentSacMultiplier * avgAtm);
 
diff --git a/lib/settings/settings_bloc.dart b/lib/settings/settings_bloc.dart
index b6225ec..08906d8 100644
--- a/lib/settings/settings_bloc.dart
+++ b/lib/settings/settings_bloc.dart
@@ -71,8 +71,9 @@ class SettingsBloc extends Bloc<SettingsEvent, SettingsState> {
       if (event.principles == Principles.MINGAS) {
         if (newSettings.isMetric && newSettings.sacRate.l < 15) newSettings.sacRate = VolumeL(15);
         if (!newSettings.isMetric && newSettings.sacRate.cuft < 0.5) newSettings.sacRate = VolumeL(0.5);
-        if (newSettings.troubleSolvingSacMultiplier < 2) newSettings.troubleSolvingSacMultiplier = 2;
-        if (newSettings.ascentSacMultiplier < 2) newSettings.ascentSacMultiplier = 2;
+        newSettings.troubleSolvingSacMultiplier = 2;
+        newSettings.ascentSacMultiplier = 2;
+        newSettings.troubleSolvingDuration = 1;
         newSettings.safetyStopDuration = 0;
         newSettings.safetyStopSacMultiplier = 0;
         newSettings.hideNdlNotice = true;
diff --git a/lib/settings/settings_view.dart b/lib/settings/settings_view.dart
index ff90b51..a7cabe1 100644
--- a/lib/settings/settings_view.dart
+++ b/lib/settings/settings_view.dart
@@ -38,8 +38,8 @@ class _SettingsViewState extends State<SettingsView> {
               delegate: SliverChildListDelegate(
                 [
                   generalTable(context, state.settings),
-                  troubleSolvingTable(context, state.settings),
-                  ascentTable(context, state.settings),
+                  if (state.settings.principles == Principles.ROCKBOTTOM) troubleSolvingTable(context, state.settings),
+                  if (state.settings.principles == Principles.ROCKBOTTOM) ascentTable(context, state.settings),
                   if (state.settings.principles == Principles.ROCKBOTTOM) safetyStopTable(context, state.settings),
                   visualTable(context, state.settings),
                   Divider(