FYI
Exchanged an email or two with Fred today on other things and i mentioned your panel. He responded with:
“The key mode is indeed a weird one, because Roland sends it with 2 sysex. That guy could be missing this, I dont know. When the keymode is edited, their roland version should be updated too. (changing the key mode is not trivial)”
That might give you a clue or two.
Just trying to get the panel to work with my JX at moment…
Cheers
Guy