Yamaha DTXpress/DTXplorer/DTXtreme

Anybody out there bothered by these? I sometimes get them with the 
KP60 for no apparent reason. I've reduced rejection/self-rejection/ 
specific rejection settings considerably.  That might do the trick--
I'll have to wait to find out--but if anyone has had experience in 
this area, advice would be appreciated. The pad does seem a little 
hard and prone to double hits. Even when you're not aware of it, the 
trigger menu registers them. Maybe some of these double hits are 
capable of blocking legitimate ones that follow.

Ed