I can try working on this, but no guarantees.... I think you might be right that the pK is faulty.
Recently, I've had to start switching EVERYTHING except the genuine pitch bend (with LSB) over to my QuNeo because one day, out of the blue, my pK stopped accepting Native messages.... I'm baffled, and think there is something wrong with the units firmware and there's no firmware update that I can find. Something I was doing must have caused the firmware to reprogram itself????
It sucks - and worse yet, I can't even do a factory restart anymore to reinitialize it!
Sorry bud, but something's wrong with the pK, I think
Best of luck... lemme know if you figure anything out.