Yamaha DTXpress/DTXplorer/DTXtreme

Thanks for the great feedback, guys - it's good to be back!
After reading your comments, I came a little closer to understanding 
the problem. It IS related to the SelfRej, Rej and SPCRej settings 
but I'm damned if I can figure it out.

Previously I've always used the preset trigger "1 Medium", but after 
noticing the dropouts, I decided to fiddle about with a custom setup. 
Since I gig a lot, I decided to change MVel and Gain, so I could play 
louder without having to hit the pads as hard. I also changed my 
SelfRej & Rej settings as low as possible for buzz rolls etc. So far 
so good.
Then I noticed that the dropouts had been completely cured. 
Unfortunately now I was getting crosstalk between pads (mostly toms 1 
& 2)....

The problem seems related to how hard or soft I hit the pads and the 
Rej setting. With the "1-Medium" trigger setup (in fact, ALL the 
preset triggers), dropouts galore. With my custom setup - no dropouts 
but crosstalk. I just want to find the perfect balance between being 
able to play softly and quickly without losing triggers AND without 
triggering other pads.

Here are the settings for my custom trigger setup. Maybe someone can 
give me some suggestions:

All pads are Gain=99, MVel=50, SelfRej=2, Rej=1
(1)Kick - SPRej=1 frm=6&7
(2)Snare - SPRej=1 frm=8
(3)Tom1 - SPRej=9 frm=6&7
(4)Tom2 - SPRej=9 frm=6&7
(5)Tom3 - SPRej=9 frm=6&7
(6)Ride - SPRej=5 frm=4
(7)Crash - SPRej=9 frm=4
(8)HiHat - SPRej=1 frm=2

NB. If I try specifying 'frm' as 3 and 4 (to stop crosstalk on the 
1st two toms), the bloody dropouts come back again!