diff --git a/Blender/coa_tools/__init__.py b/Blender/coa_tools/__init__.py
index 244bdcb..faf6401 100644
--- a/Blender/coa_tools/__init__.py
+++ b/Blender/coa_tools/__init__.py
@@ -58,9 +58,11 @@ class ExampleAddonPreferences(bpy.types.AddonPreferences):
     show_donate_icon = bpy.props.BoolProperty(name="Show Donate Icon",default=True)
     sprite_import_export_scale = bpy.props.FloatProperty(name="Sprite import/export scale",default=0.01)
     sprite_thumb_size = bpy.props.IntProperty(name="Sprite thumbnail size",default=48)
+    json_export = bpy.props.BoolProperty(name="Experimental Json export",default=False)
     def draw(self, context):
         layout = self.layout
         layout.prop(self, "show_donate_icon")
+        layout.prop(self,"json_export")
         layout.prop(self,"sprite_import_export_scale")
         layout.prop(self,"sprite_thumb_size")
 
@@ -178,21 +180,28 @@ def update_sprites(dummy):
                 context.scene.frame_current = 0
 
 
+ticker = 0
 @persistent
 def scene_update(dummy):
+    global ticker
+    ticker += 1
     context = bpy.context
     if hasattr(context,"visible_objects"):
         objects = context.visible_objects
     else:
         objects = bpy.data.objects
     if  hasattr(context,"window_manager"):   
-        wm = bpy.context.window_manager    
+        wm = bpy.context.window_manager
         if wm.coa_update_uv:
             for obj in objects:
                 if "coa_sprite" in obj and obj.animation_data != None and obj.type == "MESH":
                     if obj.coa_sprite_frame != obj.coa_sprite_frame_last:
                         update_uv(bpy.context,obj)
-                        obj.coa_sprite_frame_last = obj.coa_sprite_frame             
+                        obj.coa_sprite_frame_last = obj.coa_sprite_frame 
+                    if ticker%5 == 0:
+                        if obj.coa_alpha != obj.coa_alpha_last:
+                            set_alpha(obj,bpy.context,obj.coa_alpha)
+                            obj.coa_alpha_last = obj.coa_alpha                
                 
     if hasattr(bpy.context,"active_object"):
         obj = bpy.context.active_object
diff --git a/Blender/coa_tools/operators/modal_update.py b/Blender/coa_tools/operators/modal_update.py
index ab4930d..17f5f08 100644
--- a/Blender/coa_tools/operators/modal_update.py
+++ b/Blender/coa_tools/operators/modal_update.py
@@ -185,7 +185,7 @@ def modal(self,context,event):
                     
                 self.obj_mode_hist = obj.mode
                 
-        if self.check_event_value(event) == "JUST_PRESSED" and active_object != None and event.type == "G" and active_object.type == "ARMATURE" and active_object.mode == "POSE":
+        if active_object != None and (self.check_event_value(event) in ["JUST_PRESSED","PRESSED"] and event.type == "G") and active_object.type == "ARMATURE" and active_object.mode == "POSE":
             bpy.context.window_manager.coa_update_uv = True
         elif self.check_event_value(event) == "JUST_RELEASED" and bpy.context.window_manager.coa_update_uv:  
             bpy.context.window_manager.coa_update_uv = False
diff --git a/Blender/coa_tools/ui.py b/Blender/coa_tools/ui.py
index e48b3cb..dc2e4c7 100644
--- a/Blender/coa_tools/ui.py
+++ b/Blender/coa_tools/ui.py
@@ -427,8 +427,9 @@ def draw(self, context):
                     row = layout.row(align=True)
                     row.operator("import.coa_import_sprites",text="Import Sprites",icon="IMASEL")
                     
-                    row = layout.row()
-                    row.operator("object.export_to_json",text="Export Json",icon="EXPORT",emboss=True)
+                    if get_addon_prefs(context).json_export:
+                        row = layout.row()
+                        row.operator("object.export_to_json",text="Export Json",icon="EXPORT",emboss=True)
                     
                 row = layout.row(align=True)
                 row.label(text="Edit Operator:")