Yamaha DTXpress/DTXplorer/DTXtreme

My second module (Yamaha TMX) is only used to control my drums but I 
cannot set the gain low enough and the rejection high enough to 
prevent cross triggering.

Is there anything else I can do to further isolate the drums? I'm on 
hte verge of just dumping this module and get one that I know works 
better. But with Christmas coming and 4 kids it'll hav eto wait until 
next year and I cannot wait that long. ;-)

Thanks

Ken in Kona