I'm on a Gottlieb '73 Hot Shot that needs a few tweaks. Any idea why my right flipper (about every 10-20th stroke) randomly scores 500 points? I thought maybe the concussion of it was making the nearby leaf switch for the 500 Pt Roll Over connect but I did a few tests and it doesn't appear to be that (I put paper between blades, and as another test, put switch widely out of adjustment - problem persisted). Visually scoured all around, but can't find another switch that might do that. Also, problem can't be replicated when the field is in upright, maintenance mode. Only when it's lying down, hence my thinking gravity is affecting a switch. Thanks for any advice!