I have a switch stuck open on my WWLE number 102 gobstopper hole entrance. It is causing the VUK coil to continuously fire thinking a ball has entered the hole. Looking at the manual it appears these are part numbers 18-005001-00 and 18-005001-01. Is this is simple switch failure that needs to be replaced? It's not a traditional switch contact that I am used to manually adjusting. Any help is appreciated.