I started to experience a slow backwards rolling ball hang up, on the inner loop switch, within the last two weeks. Didn’t happen very often, but noticing it more lately.
As is, the remedy would be to pull the glass(not ideal during a game) or shake the machine(causing either tilt warnings and/or extra “cheat” points), to get the ball loose.
There’s a couple of options out there, the MRS being one that would eliminate the wire of the switch.
I went a different route, since I had some washers on hand. I used two #8 washers stacked, between the switch base and bottom of playfield. I placed them under the screw closest to the switch hole, since all I wanted to do, was lower the switch wire down a bit, to eliminate hang ups.
My switch activates fine, so didn’t want to attempt bending and repositioning it, if I didn’t need to. If doing this, keep an eye on the switch wire when reinstalling, make sure the wire sits in the middle of the slot hole, not rubbing either side. It’s easy for it to shift while you’re tightening things down.
Happy to report, still registers each pass, with no hang ups since. Will report back after more time passes.
Washers were from PBL I just happen to have on hand.