Hi Dave
so problem is more so , what they call the single finger chords, and by the sounds of things, they’re far from that if you need 3 fingers to play a 7th.

Might do a bit of investigation and make sure I have actually picked best mode for me, seems to be working ok.
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best wishes
Rikki 🧸

Korg PA5X 88 note
SX900
Band in a Box 2022