the Bonus Unit on this Gottlieb Sure Shot Pinball doesn't always reset. Ball is in the outhole, all score reels are reset to "0" but it won't kick the ball to shooter lane because(I assume)the Bonus Unit stepper hasn't reset. If I reset the Bonus unit manually I can play many games and the problem never shows again until the machine comes back from it's owner. the ball is always sitting in the outhole, score units have reset to zereo but startup sequence hasn't completed due to the Bonus Unit not resetting. Any ideas or tips on what might be going on would be appreciated. I'm faily new to these EM type machines so if anyone can help would be great. Thank you.