Thanks to @wlutke and @lewm for giving me the confidence to measure the resistance without worrying about damaging the cartridge, and a small brainstorm I had that I could simply measure resistance from an RCA cable attached to the turntable, I was able to figure out what was going on and fix it without needing to send it out for repairs.
What happened is the plastic thing that holds the pins that connect to the tonearm cables got rotated inside the connector so that grounds were connecting to the hot RCA pins and vice versa. For some reason there is nothing preventing that round plastic thing with the pins from rotating inside of the housing. When I unplugged it to put a twist in the wires to increase anti-skate the whole thing rotated screwing up the connections. I realigned it and it seems to be working properly now. I assume something must be missing from my connector to prevent that rotation because VPI's instructions for adjusting anti-skate explicitly call for unplugging that connector and rotate it to change the tension on the wires. But in my setup all that did was rotate the pins inside the housing so it was connected incorrectly when it was plugged back in.
Now I just need to figure out if there is some sort of add on part that I can get to adjust anti-skate because I need more outer force to prevent distortion in the right channel and I already had tracking force up to 2.2 grams.