No problem - just a weird "simple" fingering mode like Yamaha has too.
In one finger mode, since I switch between auto and manual bass alot - I like to hear a major chord.(OK so far)
When I need a minor chord, I want to add the minor third of the chord, and NOT some "made up" one black key to the left type of system. I have a theory background and I KNOW the notes ... I just want to play them as simple as possible whenever I can.
The Ketron, Korg & Roland companies all handle the one finger mode the way I like. For dim or aug chords .... you hane no choice but to use three fingers or more, and that's OK .... I just want easy when I can get it. It's not a design flaw .... just a weird, UNmusical design that violates all I learned about chord construction and harmonization!
"C" and "Eb" should be a C min, NOT an "Eb7" !!!!!!!!!(or whatever it comes up as...)