Hi all. I'm new to the forum and am just finishing up my first restoration of a Williams funfest that I found at a thrift shop. It's all working perfectly except that I can only play 1 or 2 player, not 3-4. When I have plenty of credits and push the button on the front it will only advance the player unit up to twice. If I manually cycle the coin relay it works fine though. Any help would be appreciated.

That was it! Thank you so much. That would have been a hard one for me to figure out. Someone before me mounted the leaf switch on the wrong side of the mounting ear. It was on the bottom rather than the top. So based on how it was mounted, I had adjusted the switch to open when the post on the ratchet wheel touched it. The result of that was that the switch was open closed only in position zero rather than closing only when in position 3