Index: firmware/App/Controllers/SyringePump.c
===================================================================
diff -u -r104bd9ab84f7619fe04670a5cee37638e30f5a39 -rcfa825a18b02440d9be8b0da68980a669ac42682
--- firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision 104bd9ab84f7619fe04670a5cee37638e30f5a39)
+++ firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision cfa825a18b02440d9be8b0da68980a669ac42682)
@@ -103,7 +103,7 @@
 /// HW volume variance in the syringe pump in encoder counts.
 #define SYRINGE_PUMP_HW_TOLERANCE_POS                 ( SYRINGE_ENCODER_COUNTS_PER_ML * SYRINGE_PUMP_HW_TOLERANCE_ML )
 /// Expected position of empty in relation to home position.
-#define SYRINGE_PUMP_EMPTY_POS                        ( SYRINGE_ENCODER_COUNTS_PER_ML * 10.755F )
+#define SYRINGE_PUMP_EMPTY_POS                        ( SYRINGE_ENCODER_COUNTS_PER_ML * 9.92F  )
 /// Over-travel (past empty) allowance for alarm.
 #define SYRINGE_PUMP_EMPTY_POS_MARGIN                 ( SYRINGE_ENCODER_COUNTS_PER_ML * 0.5F )
 /// Minimum retract position.
Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -r104bd9ab84f7619fe04670a5cee37638e30f5a39 -rcfa825a18b02440d9be8b0da68980a669ac42682
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 104bd9ab84f7619fe04670a5cee37638e30f5a39)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision cfa825a18b02440d9be8b0da68980a669ac42682)
@@ -465,24 +465,24 @@
             }
             else if ( TD_PRE_TREATMENT_HEPARIN_SETUP_STATE == currentPreTreatmentState )
             {
-                // Treat the Load Syringe alarm acknowledgment as syringe load
-                // confirmation only while awaiting user confirmation. Otherwise,
-                // resume the interrupted Heparin Setup state.
-                if ( TRUE == isPreTxHeparinAwaitingSyringeLoadConfirmation() )
-                {
-                    signalPreTxHeparinSyringeLoadConfirmed();
-                }
-                else
-                {
-                    signalResumePreTxHeparinSetup();
-                }
+                signalResumePreTxHeparinSetup();
             }
             else
             {
                 // No action required.
             }
             break;
 
+        case ALARM_ACTION_ACK:
+            if ( ( TD_PRE_TREATMENT_HEPARIN_SETUP_STATE == currentPreTreatmentState ) &&
+                 ( TRUE == isPreTxHeparinAwaitingSyringeLoadConfirmation() ) )
+            {
+                // OK on the Load Syringe clear-only alarm confirms that
+                // the syringe was loaded and resumes the paused state.
+                signalResumePreTxHeparinSetup();
+            }
+            break;
+
         default:
             // Do not handle other actions in Pre-Treatment mode.
             break;
Index: firmware/App/Modes/StatePreTxHeparinSetup.c
===================================================================
diff -u -r18c3483e0b479ef408885b5edb71f2ccd118a6bb -rcfa825a18b02440d9be8b0da68980a669ac42682
--- firmware/App/Modes/StatePreTxHeparinSetup.c	(.../StatePreTxHeparinSetup.c)	(revision 18c3483e0b479ef408885b5edb71f2ccd118a6bb)
+++ firmware/App/Modes/StatePreTxHeparinSetup.c	(.../StatePreTxHeparinSetup.c)	(revision cfa825a18b02440d9be8b0da68980a669ac42682)
@@ -49,7 +49,6 @@
 static PRE_TX_HEPARIN_SETUP_STATE_T interruptedPreTxHeparinSetupState;  ///< Pre-treatment heparin setup substate interrupted by a recoverable alarm.
 
 static BOOL heparinSetupResumeRequested;                                ///< Flag indicates alarm requesting to resume pre-treatment heparin setup.
-static BOOL syringeLoadConfirmed;                                       ///< Flag indicates user confirmed syringe load.
 static BOOL syringeRetractStarted;                                      ///< Flag indicating syringe retract has been initiated.
 static BOOL syringePreloadStarted;                                      ///< Flag indicating syringe preload has been initiated.
 
@@ -73,8 +72,7 @@
  * @details \b Inputs: none.
  * @details \b Outputs: currentPreTxHeparinSetupState,
  * interruptedPreTxHeparinSetupState, syringeRetractStarted,
- * syringePreloadStarted, heparinSetupResumeRequested, and
- * syringeLoadConfirmed.
+ * syringePreloadStarted, heparinSetupResumeRequested,
  * @return none.
  *************************************************************************/
 void initPreTxHeparinSetup( void )
@@ -84,7 +82,6 @@
     syringeRetractStarted = FALSE;
     syringePreloadStarted = FALSE;
     heparinSetupResumeRequested = FALSE;
-    syringeLoadConfirmed = FALSE;
 
     resetPreTxHeparinSetupFlags();
 }
@@ -111,8 +108,7 @@
  * pre-treatment heparin setup state is invalid.
  * @details \b Inputs: currentPreTxHeparinSetupState.
  * @details \b Outputs: currentPreTxHeparinSetupState, current substate,
- * TD_EVENT_SUB_STATE_CHANGE event, heparinSetupResumeRequested, and
- * syringeLoadConfirmed.
+ * TD_EVENT_SUB_STATE_CHANGE event, heparinSetupResumeRequested,
  * @return none.
  *************************************************************************/
 void execPreTxHeparinSetup( void )
@@ -203,35 +199,27 @@
  *************************************************************************/
 BOOL isPreTxHeparinAwaitingSyringeLoadConfirmation( void )
 {
-    return ( PRE_TX_HEPARIN_SETUP_AWAIT_SYRINGE_LOAD_CONFIRMATION_STATE == currentPreTxHeparinSetupState ) ? TRUE : FALSE;
-}
+    BOOL awaitingSyringeLoadConfirmation = FALSE;
 
-/*********************************************************************//**
- * @brief
- * The signalPreTxHeparinSyringeLoadConfirmed function signals that the
- * user confirmed syringe load.
- * @details \b Inputs: none.
- * @details \b Outputs: syringeLoadConfirmed.
- * @return none.
- *************************************************************************/
-void signalPreTxHeparinSyringeLoadConfirmed( void )
-{
-    syringeLoadConfirmed = TRUE;
+    awaitingSyringeLoadConfirmation =
+        ( PRE_TX_HEPARIN_SETUP_AWAIT_SYRINGE_LOAD_CONFIRMATION_STATE == currentPreTxHeparinSetupState ) ||
+        ( ( PRE_TX_HEPARIN_SETUP_PAUSED_STATE == currentPreTxHeparinSetupState ) &&
+          ( PRE_TX_HEPARIN_SETUP_AWAIT_SYRINGE_LOAD_CONFIRMATION_STATE == interruptedPreTxHeparinSetupState ) );
+
+    return awaitingSyringeLoadConfirmation;
 }
 
 /*********************************************************************//**
  * @brief
  * The resetPreTxHeparinSetupFlags function resets all signal flags used by
  * the pre-treatment heparin setup state machine.
  * @details \b Inputs: none.
- * @details \b Outputs: heparinSetupResumeRequested and
- * syringeLoadConfirmed.
+ * @details \b Outputs: heparinSetupResumeRequested
  * @return none.
  *************************************************************************/
 static void resetPreTxHeparinSetupFlags( void )
 {
     heparinSetupResumeRequested = FALSE;
-    syringeLoadConfirmed = FALSE;
 }
 
 /*********************************************************************//**
@@ -305,7 +293,6 @@
     }
     else if ( TRUE == isSyringePumpPreLoaded() )
     {
-        setAlarmUserActionEnabled( ALARM_USER_ACTION_RESUME, TRUE );
         activateAlarmNoData( ALARM_ID_TD_PRE_TX_HEPARIN_LOAD_SYRINGE );
         state = PRE_TX_HEPARIN_SETUP_AWAIT_SYRINGE_LOAD_CONFIRMATION_STATE;
     }
@@ -337,7 +324,7 @@
  * @brief
  * The handlePreTxHeparinAwaitSyringeLoadConfirmationState function handles
  * the await syringe load confirmation state.
- * @details \b Inputs: syringeLoadConfirmed and alarm stop status.
+ * @details \b Inputs: alarm stop status.
  * @details \b Outputs: interruptedPreTxHeparinSetupState and syringe
  * pump operating state.
  * @return Current or next pre-treatment heparin setup state.
@@ -352,7 +339,7 @@
         setupPreTxHeparinState( PRE_TX_HEPARIN_SETUP_PAUSED_STATE );
         state = PRE_TX_HEPARIN_SETUP_PAUSED_STATE;
     }
-    else if ( TRUE == syringeLoadConfirmed )
+    else if ( TRUE == heparinSetupResumeRequested )
     {
         setupPreTxHeparinState( PRE_TX_HEPARIN_SETUP_SEEK_STATE );
         state = PRE_TX_HEPARIN_SETUP_SEEK_STATE;
@@ -549,7 +536,6 @@
 
              // Resume confirms syringe loading and continues to Seek.
             case PRE_TX_HEPARIN_SETUP_AWAIT_SYRINGE_LOAD_CONFIRMATION_STATE:
-                setAlarmUserActionEnabled( ALARM_USER_ACTION_RESUME, FALSE );
                 setupPreTxHeparinState( PRE_TX_HEPARIN_SETUP_SEEK_STATE );
                 state = PRE_TX_HEPARIN_SETUP_SEEK_STATE;
                 break;
Index: firmware/App/Services/TxParams.c
===================================================================
diff -u -r83310420ae862de4724f8cfbbaeda9936c47801b -rcfa825a18b02440d9be8b0da68980a669ac42682
--- firmware/App/Services/TxParams.c	(.../TxParams.c)	(revision 83310420ae862de4724f8cfbbaeda9936c47801b)
+++ firmware/App/Services/TxParams.c	(.../TxParams.c)	(revision cfa825a18b02440d9be8b0da68980a669ac42682)
@@ -1912,7 +1912,7 @@
     pressureValid = isPressureLimitValueValid(
                         value,
                         getU32SysConfigTreatmentParamLowerRangeLimit( TREATMENT_PARAM_VEN_PRES_HIGH_LIMIT_WINDOW ),
-                        getU32SysConfigTreatmentParamUpperRangeLimit( TREATMENT_PARAM_VEN_PRES_LOW_LIMIT_WINDOW ) );
+                        getU32SysConfigTreatmentParamUpperRangeLimit( TREATMENT_PARAM_VEN_PRES_HIGH_LIMIT_WINDOW  ) );
 
     return pressureValid;
 }
@@ -1932,7 +1932,7 @@
 
     pressureValid = isPressureLimitValueValid(
                             value,
-                            getU32SysConfigTreatmentParamLowerRangeLimit( TREATMENT_PARAM_VEN_PRES_HIGH_LIMIT_WINDOW ),
+                            getU32SysConfigTreatmentParamLowerRangeLimit( TREATMENT_PARAM_VEN_PRES_LOW_LIMIT_WINDOW  ),
                             getU32SysConfigTreatmentParamUpperRangeLimit( TREATMENT_PARAM_VEN_PRES_LOW_LIMIT_WINDOW ) );
 
     return pressureValid;