Yamaha DTXpress/DTXplorer/DTXtreme

I had this problem with my bass pad missing beats.
 
I have a DTXPress II but I think the kick pad is the same?
 
I thought it was me - hitting too hard.  I listened to some of the  posters' 
comments on here and altered the parameters (can't remember which ones  - but 
it was pretty straightforward using the advanced manual).
 
That seemed to do it.  It's not done it since so I'm well  pleased.
 
It is VERY infuriating when it misses beats - especially when you play  live!
 
All the best.
 
Mark