Working on a gottlieb Golden Arrow. It was in a garage for 20 years. Lots of moisture damage. No water per se, just moisture from being in a non-temperature regulated environment for so long. Some surface rust, parts that are frozen due to time and that rust.

I have made great progress. Can get the game to reset, shoot a ball into play. But as soon as a ball is sent into the plunger to start a game the 100 score starts firing up and won't stop. I'm not overly experienced at this. I did look at all the contact for slings, targets and bumpers that would score 100 points but all seem to be gapped okay, nothing appears to be making that kind of contact.

Like I said, pretty inexperienced at repairs, might be something frozen by the rust.

Any suggestions of where to look next?