Need help troubleshooting a Gottlieb Sheriff. When I try to start a game it gets stuck in reset. Motor runs and a stepper under the playfield runs. I think it's a bonus step up/down unit. I cleaned all the switches and wipers on the bonus stepper but the game still won't reset and kick out a ball. Also, if I switch the score reels off of zero manually, only the player 4 reels and the thousands and ten thousands reels on player three reset.
What should I do next?