Great News!!! After running to the local dollar general and buying a .75cent pack of nail files, I cleaned all of the front rack of switches - very gently. Didn't want to damage but clean. The big thing is, thinking over your above instructions, looking at why one would be closed, the other open, then looking closer at my machine, where the rack was pushed back and left for so long, it had just closed all the normally open switches. So one by one, adjusting and checking, it was the "Last Ball" relay switch was making the whole issue (or a combination of all) - I can set it to multi player, and I can run through all the balls! IT"S WORKING! IT"S ALIVE! It looks great and plays great, just needed the TLC!
OK - last item on this one - on the credit wheel - when ever it gets down to one (1) left, it will not start up. The little pin is hitting a switch. What's up here? An how do I set this to free play? I read the site, making the smaller, middle switch norm closed, but I cant get this to work....its' the last thing to call this one complete (Besides a cleaning and rubber/lights change)