Hi all. I've done two more mods to my MP. A random sample-and-hold for MG1, and removed the key assign mode reset when switching effects on.
 Everything works fine. I've used the Zen Mono/Poly web page as a source for the S&H mod.
 Here's the link.
http://monopoly.highspies.com/samplehold.html
 I'll upload pictures soon, and possibly a link to a short audio demo.
 So, here's my updated list of mods so far:
 1-Converted arpeggiator trigger input from S-Trigger to Pulse.
 2-Removed key assign reset when switching effect on.
 3-Added random sample-and-hold to MG1
 Alain.