Well Rob
               Not sure if beeing 4 player makes any difference but

on 0  all switches are open
on 9  all switches are closed
on 1-8 all switches are closed except the center switch

Four players may be different does anyone have a single player Gottlieb they can check?

Hmmm this is different to what Mick has said but i adjusted and cleaned the contacts  to reflect what you said Daniel and now im just getting the motor running without resetting any score reels.