Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -rbb43bcd42a48f6e754d1a6b0f346e9a876d6dcf6 -r04717003bb672ca3ed507a924156e141db2d5855
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision bb43bcd42a48f6e754d1a6b0f346e9a876d6dcf6)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 04717003bb672ca3ed507a924156e141db2d5855)
@@ -53,7 +53,7 @@
 
 #define MSG_NOT_ACKED_TIMEOUT_MS        150     ///< Maximum time for a Denali message that requires ACK to be ACK'd
 
-#define MSG_NOT_ACKED_MAX_RETRIES       8       ///< Maximum number of times a message that requires ACK that was not ACK'd can be re-sent before alarm
+#define MSG_NOT_ACKED_MAX_RETRIES       10      ///< Maximum number of times a message that requires ACK that was not ACK'd can be re-sent before alarm
 #define PENDING_ACK_LIST_SIZE           25      ///< Maximum number of Denali messages that can be pending ACK at any given time
 
 #define MAX_FPGA_CLOCK_SPEED_ERRORS     3       ///< maximum number of FPGA clock speed errors within window period before alarm
@@ -596,6 +596,7 @@
                     // If message from UI channel, mark UI communication so HD can begin transmitting
                     if ( ( COMM_BUFFER_IN_CAN_UI_2_HD == MSG_IN_BUFFERS[ i ] ) || ( COMM_BUFFER_IN_CAN_UI_BROADCAST == MSG_IN_BUFFERS[ i ] ) )
                     {
+                        timeOfLastUICheckIn = getMSTimerCount();
                         uiDidCommunicate = TRUE;
                     }
                 }