Index: firmware/App/Controllers/Valves.h
===================================================================
diff -u -r395522dffef1348e176564925656012f529c1910 -r7a211da92e750bc5e306e897e956487a4303a36b
--- firmware/App/Controllers/Valves.h	(.../Valves.h)	(revision 395522dffef1348e176564925656012f529c1910)
+++ firmware/App/Controllers/Valves.h	(.../Valves.h)	(revision 7a211da92e750bc5e306e897e956487a4303a36b)
@@ -33,6 +33,9 @@
 
 // ********** public definitions **********
 
+#define VALVE_NO_FORCE_HOME             FALSE       ///< Do not re-home valve if already homed - just go to position A instead
+#define VALVE_CARTRIDGE_MAY_BE_PRESENT  TRUE        ///< A cartridge may be present, so allow for homed positions to be further away from where expected
+
 /// Valves positions
 typedef enum valveStatesNames
 {