Recently bought this machine used/unshopped and was working fine for the last couple months (minus a couple switch errors at start...1, 54). Launches ball, locks in center eject (either/or), clicks, holds ball then advances to Ball 2.My first machine, so just kinda looking for pointers. I don't see any burnt or loose solder connections, and fuses seem intact minus the one I'm missing behind the glass that I think is for GI lights. Any pointers or tips appreciated.