Thanks guys, went back and checked alignement, looked ok.

Ended up wiping off the silicon gel from the bakelite (electronics based product), and 1st player light isn't coming on anymore (scratching my head).

Anyway ignoring that strange effect, the machine still won't go into game over. Im having trouble understanding how it triggers game over (looking at the schematic) - are you guys able to give me some guidance on how it works, where to look.

Thanks. John...