Have a Chicago Coin Cadillac spare lite ball bowler that has been working fine for years and lately is giving an extra frame at end of game before 'game over'. Frames increment correctly including 10th frame. At end of 10th frame or extra fame if strike or spare in the 10th the game does not go to game over. So rather than going to game over I get one extra frame and then game over. Have not found anything obvious and trying to tack it down with schematic but no luck yet.
Any suggestions would be great.