So, My Mousin' Around just got put back together after installing a HardTop. This game seems to have so many old and brittle wires that I'm amazed they didn't all fall apart or break at the solder joint. Everything appears to be back together correctly and switches all show up just fine by themselves. The problem comes when multiple TRAP letters are hit at the same time.

In Switch Edge Mode, hitting RA shows as Center Ramp and hitting PR shows Right Standup (which on the Matrix is Playfield Multiply).

In gameplay, hitting TR at the same time gives a Danger or Tilt, RA hits the credit button, and AP gives a CHEESE letter. So, if I get past Ball 1 without adding a player, RA will give me a restart.

Not sure where to start since these are 4th column switches jumping to the 5th column on the Matrix in test but 4th to 1st in gameplay.

Any help would be appreciated.

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So, I went on a Diode hunt. I've got leaks everywhere. All yellow highlights show atypical diode behavior on my meter. Interestingly enough, only one that shows as leaky with the R target switch closed, shows as normal when that R isn't closed (44 Right Ramp Entrance).

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