All the switches stay stuck closed regardless of where JP1 is. In position A I can press button 6 and make it open, and I get nothing in position B as expected.
I'm trying to set up a Naomi with Marvel Vs Capcom 2 in one of my head to head setups and I'm really struggling to get P1 and P2 button 6 working correctly. I tested this in my linked Blast Citys and in my New Versus City and got the same results. I'm using a Sega 838-13683-91 JVS to Jamma...