When I roll over a 500 switch or a Joker I get somewhere between 0 and 100 points. It was working perfectly until someone tilted it aggressively and now it does not work right. I noticed that the "C" relay does not stay energized like it's supposed to for the 500 points. I have a schematic and I thought I knew what to do but I guess I don't. What should I be looking at/for? I just want to go back to playing it!