Sorry to hear of your dilemma Deane. I read over on the Korg PA forum the RH voices on the PA600 were set up from the factory at +1 Octave. For your style of playing +1 Octave made the sound out of range for the instrument if I understood the situation correctly. If you have to tweak most if not all of the sounds individually it would be quite a task. I wonder if Korg realizes the scope of their decision to give RH voices a +1 Octave designation. I imagine others may be inclined to forgo the PA600 if they realized the situation beforehand. An arranger should be set up from the factory where you don't have to spend hours or days or weeks tweaking things to get it to sound the way you want. Of course some people's style of playing would be suited for the +1 Octave RH voice setting especially when splitting up the keyboard. To each his own. Sorry it didn't work out for you.

All the best, Mike