A little help guys. Ok I bought a used Snapper 36". All of a sudden the OPC is not working properly. The mower will not start or run unless the OPC is engaged. It should and was working properly when I first got it. Basically if the mower is in neutral it should start and run. At this point I have to bungy the OPC to start or idle. So what could be wrong what am I looking for. Any help would be appreciated.