Scoring reel resetting problems (continually spinning, skipping zero) as
well as scoring problems (not scoring proper amount) can sometimes be
caused by the score motor switch stack actuator being worn, bent, or broken.
The actuator is the bottom piece that rubs directly on the cam and can be
made of metal or nylon. If you check the normal reasons for the above
failures and still have problems, check the actuator and switch gap on the
score motor and you will likely find your problem.