Index: firmware/App/Controllers/SyringePump.c
===================================================================
diff -u -rfecc5737505ef660507e69ed6c26ae9999979f1d -rc29d60cd59d549a617ed077248f5d19dfec74e76
--- firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision fecc5737505ef660507e69ed6c26ae9999979f1d)
+++ firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision c29d60cd59d549a617ed077248f5d19dfec74e76)
@@ -93,7 +93,7 @@
 
 /// Expected position of empty in relation to home position.
 #define SYRINGE_PUMP_EMPTY_POS                        ( SYRINGE_ENCODER_COUNTS_PER_ML * 11.0F )
-/// Margin of error for empty position determination.
+/// Over-travel (past empty) allowance for alarm.
 #define SYRINGE_PUMP_EMPTY_POS_MARGIN                 ( SYRINGE_ENCODER_COUNTS_PER_ML * 0.5F )
 /// Minimum retract position.
 #define SYRINGE_PUMP_RETRACT_POS_MIN                  ( SYRINGE_ENCODER_COUNTS_PER_ML * -0.5F )
@@ -1412,6 +1412,7 @@
         syringePumpPlungerFound = FALSE;
         syringeVolumeAdequate = FALSE;
         syringePumpPrimeCompleted = FALSE;
+        syringePumpPreLoadCompleted = FALSE;
         syringePumpVolumeRequired = 0.0F;
         // Clear insufficient volume alarm condition in case we're retracting to allow user to resolve alarm
         clearAlarmCondition( ALARM_ID_HD_SYRINGE_PUMP_NOT_ENOUGH_HEPARIN_ALARM );