The playfield had a Mylar on it that had gone brown so it had to be removed. There was also some wear in places and the dodgy reels which helped me decide to sell it a guy wanted one for his wife for xmas this was a week before so i told him a stupid price and he said yes. It didnt get the full treatment just a good clean which came back to haunt me as i didnt rebuild the steppers so sure enough boxing day and the damn thing locked up grrrrrr But he was a nice bloke and was nice about it so i went over and rebuilt them there. Havnt had a problem since.
Check the color of that mylar YUCK