My neighbor's #Aladdin's Castle has a strange reset issue I've never encountered before.

During the reset sequence, the bonus stepper continuously tries resetting in bursts of 5 steps. And the player 2 100's reel cycles 5 steps at a time and doesn't stop on zero, thus the score motor continues to run since the machine isn't seeing zero... Switch stack 2 on the score motor is the only stack that cycles five steps each 1/2 rotation of the motor, so I know somewhere between switch stack 2, the bonus unit, and the player 2 100's reel is the problem.

The 100's reel switches make and break as they should during the cycle with the top switch making when the reel hits zero. The reel doesn't stop on zero though. I manually set the score reel to zero and tried another reset to no avail, it just starts cycling again.

Not sure where to start poking around.

Thanks in advance!
-Steve