Emu XL-7 & MP-7 User's Group

I have a PX 7 with vintage and XL roms.  Cool machine, but it seems to 
need to be slapped around alittle.  Turning on and off when things get 
weird.  It is hard to share as I will need to make a list of buggy 
behavior and post again.  One thing now of that is a major bummer is 
when I change patterns on the command station it will change the 
volume and panning I have on a multi on my Oasys PCI card, I had other 
problems of similiar nature when hooking up the PX-7 to my Micron. I 
know about pilot error and yes sometimes I've overelooked something.  
What could I be overlooking, or is this a permanet problem? BTW the 
latest OS, and I've turned of program change on both devices