My father and I just recently picked up a Bally Xenon only to find when we brought it home, the right flipper rockets back and forth when held down. From what I've read I know this means its not switching to low voltage. Looking at the flipper closely I don't see anything immediately wrong with the EOS switch but then again I'm a novice with these types of things. Perhaps the wiring is bad? The left flipper holds down fine, so thankfully I would think that discounts any idea its something with a board. Let me know what you think. Can post more pictures if needed.