Looks like you have the drives connected to channel 1, which has termination disabled in the BIOS. Turn on termination there and see if you have better luck.
Also, remove the TERM PWR jumper from the drive in the middle of the chain and change one of the two drives to a different SCSI ID. (They cannot both be on the same ID. That's like having two IDE drives both jumpered to master, but worse. It shouldn't matter what ID you change to. Use the extra jumper you yoinked from the TERM PWR pins to do so.) You shouldn't need the START CMD or SINGLE/WIDE jumpers set either. They're the same model, they're both LVD/SE on what is, IIRC, an LVD bus, so you shouldn't need those.
Main Box: Macbook Pro M2 Max
Alas, I'm down to emulation.