I just tried it again. I went into recovery and I noted TWRP said slot A was active. I then did a factory reset and flashed just the ROM and TWRP. It then showed slot B was active. I rebooted into recovery and saw it still said slot B was active. I flashed 7.1 gapps and it looked like it installed fine, no errors. I went back into the reboot menu in TWRP and it said slot B was still active. I booted the ROM and no gapps. I've tried Open, Benzo, and Banks... All with the same result. I guess my next step is a complete wipe of the device but does seem to be flashing gapps somewhere. My assumption is it is flashing to the non active slot, but how?
I have no issue with any ROM that has gapps built in but I really want to get this working. Maybe a complete wipe of the device? Maybe Flash stock and start from there?