Trying to help out a local guy with his EM Grand Prix. I am not very good at trouble shooting EM's so any help is much appreciated! Game play good except when you hit it in the "Scores Left Bonus" and or "Scores Right Bonus". Once you hit it in either hole the ball kicks out as it should and then fires 4 or 5 more times, both sides at the same time. Then it seems to quit until you hit it in either hole again. Is my problem somewhere in the score stepper in the middle of the cab? Both switches under playfield for each hole look good and spaced appropriately.
Again, any help is appreciated! Thank you in advance.