diff --git a/essentials-framework/Essentials DM/Essentials_DM/Endpoints/Receivers/DmRmc4kZScalerCController.cs b/essentials-framework/Essentials DM/Essentials_DM/Endpoints/Receivers/DmRmc4kZScalerCController.cs
index 608706ca..afd9aff6 100644
--- a/essentials-framework/Essentials DM/Essentials_DM/Endpoints/Receivers/DmRmc4kZScalerCController.cs	
+++ b/essentials-framework/Essentials DM/Essentials_DM/Endpoints/Receivers/DmRmc4kZScalerCController.cs	
@@ -276,13 +276,26 @@ namespace PepperDash.Essentials.DM
 
 		void Scaler_OutputChange(EndpointScalerOutput scalerOutput, ScalerOutputEventArgs args) 
 		{
+			if (scalerOutput == null)
+			{
+				Debug.Console(1, this, "Scaler Output object is null");
+				return;
+			}
+			if (args == null)
+			{
+				Debug.Console(1, this, "Scaler Output Args are null");
+				return;
+			}
+			Debug.Console(2, this, "Scaler Event ID: {0}", args.EventId);
 			switch (args.EventId)
 			{
 				case ScalerOutputEventIds.WallModeFeedbackEventId:
 					VideoWallModeRawFeedback.FireUpdate();
 					break;
-			}
-					
+				default:
+					Debug.Console(2, this, "Scaler Default Unhandled Event ID: {0}", args.EventId);
+					break;
+			}			
 		}
         
     }
diff --git a/essentials-framework/Essentials DM/Essentials_DM/Endpoints/Receivers/DmRmcHelper.cs b/essentials-framework/Essentials DM/Essentials_DM/Endpoints/Receivers/DmRmcHelper.cs
index 0c9f6c66..52d8a60e 100644
--- a/essentials-framework/Essentials DM/Essentials_DM/Endpoints/Receivers/DmRmcHelper.cs	
+++ b/essentials-framework/Essentials DM/Essentials_DM/Endpoints/Receivers/DmRmcHelper.cs	
@@ -26,9 +26,9 @@ namespace PepperDash.Essentials.DM
         public StringFeedback EdidManufacturerFeedback { get; protected set; }
         public StringFeedback EdidNameFeedback { get; protected set; }
         public StringFeedback EdidPreferredTimingFeedback { get; protected set; }
-        public StringFeedback EdidSerialNumberFeedback { get; protected set; }
-
-        public IntFeedback VideoWallModeFeedback { get; protected set; }
+        public StringFeedback EdidSerialNumberFeedback { get; protected set; }
+
+        public IntFeedback VideoWallModeFeedback { get; protected set; }
         public IntFeedback VideoWallModeRawFeedback { get; protected set; }
 
         protected DmRmcControllerBase(string key, string name, EndpointReceiverBase device)
@@ -62,8 +62,8 @@ namespace PepperDash.Essentials.DM
             else
             {
                 Debug.Console(0, this, "Please update config to use 'eiscapiadvanced' to get all join map features for this device.");
-            }
-
+            }
+
             LinkDmRmcToApi(rmc, trilist, joinMap);
         }
 
@@ -145,18 +145,18 @@ namespace PepperDash.Essentials.DM
 
             trilist.UShortInput[joinMap.HdcpSupportCapability.JoinNumber].UShortValue = (ushort)hdcpCapability;
 
-            trilist.UShortInput[joinMap.HdcpInputPortCount.JoinNumber].UShortValue = (ushort)routing.InputPorts.Count;
-
-            var dmRmcScalerCBasicVideoMuteWithFeedback = rmc as IBasicVideoMuteWithFeedback;
-
-            if (dmRmcScalerCBasicVideoMuteWithFeedback != null)
-            {
-                Debug.Console(1, this, "Device is IBasicVideoMuteWithFeedback, linking video mute");
-                trilist.SetSigTrueAction(joinMap.VideoMuteToggle.JoinNumber, () => dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteToggle());
-                trilist.SetSigTrueAction(joinMap.VideoMuteOn.JoinNumber, () => dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteOn());
-                trilist.SetSigTrueAction(joinMap.VideoMuteOff.JoinNumber, () => dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteOff());
-                dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteIsOn.LinkInputSig(trilist.BooleanInput[joinMap.VideoMuteOn.JoinNumber]);
-                dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteIsOn.LinkComplementInputSig(trilist.BooleanInput[joinMap.VideoMuteOff.JoinNumber]);
+            trilist.UShortInput[joinMap.HdcpInputPortCount.JoinNumber].UShortValue = (ushort)routing.InputPorts.Count;
+
+            var dmRmcScalerCBasicVideoMuteWithFeedback = rmc as IBasicVideoMuteWithFeedback;
+
+            if (dmRmcScalerCBasicVideoMuteWithFeedback != null)
+            {
+                Debug.Console(1, this, "Device is IBasicVideoMuteWithFeedback, linking video mute");
+                trilist.SetSigTrueAction(joinMap.VideoMuteToggle.JoinNumber, () => dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteToggle());
+                trilist.SetSigTrueAction(joinMap.VideoMuteOn.JoinNumber, () => dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteOn());
+                trilist.SetSigTrueAction(joinMap.VideoMuteOff.JoinNumber, () => dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteOff());
+                dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteIsOn.LinkInputSig(trilist.BooleanInput[joinMap.VideoMuteOn.JoinNumber]);
+                dmRmcScalerCBasicVideoMuteWithFeedback.VideoMuteIsOn.LinkComplementInputSig(trilist.BooleanInput[joinMap.VideoMuteOff.JoinNumber]);
             }
 
             var routingWithFeedback = routing as IRmcRouting;
@@ -168,17 +168,21 @@ namespace PepperDash.Essentials.DM
 
 
             trilist.SetUShortSigAction(joinMap.AudioVideoSource.JoinNumber,
-                a => routingWithFeedback.ExecuteNumericSwitch(a, 1, eRoutingSignalType.AudioVideo));
-
-            var dmRmcScalerWithVideowall = rmc as DmRmc4kZScalerCController;
-
-            if (dmRmcScalerWithVideowall != null)
-            {
-                trilist.SetUShortSigAction(joinMap.ScalerOutWallMode.JoinNumber, a => dmRmcScalerWithVideowall.SetWallMode(a));
-                trilist.SetUShortSigAction(joinMap.ScalerOutWallModeRaw.JoinNumber, a => dmRmcScalerWithVideowall.SetWallModeRaw(a));
-
-
-            }
+                a => routingWithFeedback.ExecuteNumericSwitch(a, 1, eRoutingSignalType.AudioVideo));
+
+            var dmRmcScalerWithVideowall = rmc as DmRmc4kZScalerCController;
+
+            if (dmRmcScalerWithVideowall != null)
+            {
+                trilist.SetUShortSigAction(joinMap.ScalerOutWallMode.JoinNumber, a => dmRmcScalerWithVideowall.SetWallMode(a));
+                trilist.SetUShortSigAction(joinMap.ScalerOutWallModeRaw.JoinNumber, a => dmRmcScalerWithVideowall.SetWallModeRaw(a));
+
+				if (rmc.VideoWallModeFeedback != null)
+					rmc.VideoWallModeFeedback.LinkInputSig(trilist.UShortInput[joinMap.ScalerOutWallMode.JoinNumber]);
+				if (rmc.VideoWallModeRawFeedback != null)
+					rmc.VideoWallModeRawFeedback.LinkInputSig(trilist.UShortInput[joinMap.ScalerOutWallModeRaw.JoinNumber]);
+
+            }
 
         }