Hi Tony,
If you go into style record in some of the onboard styles, I’m pretty sure you’ll see settings other than for scale of C.

Let’s face it you can’t get an easier scale to work with. Haha.

The older more simple Korg styles were quite often based on Cmaj7 chord, they only needed the 1 cv per variation. Ie no matter what chord you played , it would play back correctly.

That’s all I ever did when I converted my Psr styles across to Korg. CMaj7. The early psr styles were based on that chord.
Also finally dawned on me why I had redone some of my conversions when I bought Pa4x.
When I did them originally for Pa3x I hadn’t realised newer psr styles had guitar mode tracks, ( they got more sophisticated too) and that I hadn’t gotten round to fixing them.
It was just easier to start over as I was no longer using Pa3x.

I actually picked up on it when I sold my Pa3x , some of the stuff was not playing back quite correctly. ( embarrassing. haha) I deleted them.