I have a 1956 Gottlieb SEA-BELLES I'm having a problem with. Game has set for years and am getting it up and going. Having a problem with the player and ball in play stepper. It's a two player game and if you play one player it all works fine until ball four drains and it goes to ball 5 player two. The stepper pulses twice between each ball but on the 5th ball the stepper pulses 3 times and sends it to player two ball 5. Looking at the schematic you have several score motor switches involved. Not sure where to start to find why it's stepping an extra position. I am experienced at EM games but there is always more to learn. Any help would be appreciated.