Yamaha CS80

Hi all.

I just finished installing a Kenton MIDI kit in a group member's CS80.
 Do not try this unless you're very comfortable hacking around inside
these things!

I went slowly, taking a lot of pictures on the way.  I'll set up a web
site soon, but Scott, the owner, has been bloging the install here:
 
(http://matrixsynth.blogspot.com/2007/01/yamaha-cs80-kenton-midi-retrofit.html)
- yes that's me holding the drill.

and here:
 (http://velvetacidchrist.com/cgibin/viewtopic.php?t=5135&sid=481450f641d633e2b01b3aedebb52d1f).

It all worked the first time, and I've got it hooked up to my
MIDIBoard.  I'm starting to get the hang of the set-up mode and got it
to responds to poly aftertouch.  One thing I don't understand is the
program change.  Sending MIDI program changes from 1 through 14 goes
through all the presets for tone I.  I can't figure out how to change
the presets for tone II.  Can anyone who's used this give me a hand?

Thanks,

 David