So I finally got around to attempting to do some patch changes and editing with the K4. Pressing a few buttons on the unit itself didn't result in much useful sound editing, so I looked online for software, found some, downloaded, only to find that none of it was compatible with Windows 7.
What I would like to do is save all the patches in the unit itself right now (in case the internal battery dies), then start finding some more useful tones to replace those in the banks now that I would never use. There are some good horns and strings, but some of them have too much reverb/delay/sustain on them.
I do have the Kawai manual but have yet to start playing with serious parameter editing as I thought it would be easier on the computer.