On my Premium, pretty often when selecting songs it'll select as I'm cycling through and award me Mystery Level 1, as if the clunk of the flippers is hitting a switch. The switch tests, I've never had to to before, and it confuses me. I do see when I clunk clunk on the flippers, once in a while, square to the left lights (which normally doesn't) but have no way to ID which switch this is. Obviously has to be the orb, as that's where mystery levels light. What am I looking for under the pf to fix this? Cheers!