Foolishly, I decided to buy a project pin to enhance my skills at repairing pinball machines. The plan was to learn more about fixing the mechanics with a game I did not care too much about, but I ended up with a pin that works pretty well, but has tons of surface and cosmetic issue.
Today's issue is the strange stain lines on the playfield. The previous owner pulled the mylar off and I'm thinking it might be glue from that, but they are smooth and don't really have an edge that come up from the playfield.
Any suggestions?
I'm still too dumb at this point to not even know what I don't know.