Okay… I just did some more troubleshooting. I checked for continuity across the switch. The only place I’m seeing continuity is across the diagonal posts (furthest forward and backward). I’m assuming those are both ground and that’s why but I have no continuity across any of the other 6 pegs. I tried all combinations of L and R. Also, I discovered there is 9V power at C8. So maybe it’s not the jack… great suggestion Brach.