Yamaha DTXpress/DTXplorer/DTXtreme

There was a suggestion that this had been discussed previously for a 
dtxpress II, but I'm afraid I haven't found it in the archives.

The issue is that while I can save voice settings to a user kit, the 
MIDI voice settings for pads revert to some default GM voices rather 
than being saved as the native dtxpress voices are.  The MIDI 
assignments look correct when scrolling through the pads settings, 
but they aren't correct when triggered.  The voices correct 
themselves when the PC setting is altered (by as much as one value) 
and then immediately set back to the correct value.

I've tried various "shot-in-the-dark" solutions, because I don't know 
better, including putting multiple pads with the same MIDI voice on 
different channels, copying MIDI voices to specific pads, etc. But I 
haven't found the solution to guarantee that when I leaved a saved 
drum kit that had MIDI voices defined for pads, that the same voices 
would sound when I returned to that kit definition.

Ideas?

Galen