I have a space mission pinball i have it set to free play when i press off a single player game everything resets, i play ball 1 and then from there the game will go to ball to but will jump to player two, then ball 3 sometimes it goes back to ball one or goes to player 3, and will continue to alternate between ball 1 and 2 or will cycle 1,2,3,4 and back to player 1 for score but only 5 balls total played. clean the coils and switches on player unit looked at the relays and they looked good cleaned the dirty ones. Anyone have any ideas where i should start? Game was play perfect until this weekend.

thanks
Joe