Yamaha DTXpress/DTXplorer/DTXtreme

Has anybody had any trouble with intermittent failures from the kick tower?  
A couple of months after buying my set, mine started acting up, missing 
beats every once and a while.  It kept getting worse. Results would be 
anywhere from a significant decrease in volume to no signal at all from the 
pad when striking it with equal force.  I finally took it back to the drum 
store where I bought it.  They gave me a loaner (one of those real big round 
ones) and it worked fine until they got a new one from Yamaha. The new one 
has been working fine for a few months, but now starting to act up just like 
the first one. I know it's not the cable... I tried 2 different ones.  And 
it's not the port, since plugging it into another port like a tom gives the 
same results.  Messing with the adjustments on the tower itself doesn't make 
any difference.

Thought I'd check and see if anybody else has experienced similar problems 
before I take this one back to the store too.  They're gonna start wondering 
what I'm doing with it.  I had bought a real nice Pearl pedal, which has the 
beater where you can either use the hard plastic sides, or the felt side.  I 
was using the hard plastic side on the first kick tower, and thought maybe 
it was hitting the pad too hard and causing damage to it.  So on the new one 
they gave me, I rotated the beater and am using the felt side.  Same 
results.

Am I the only out there with this problem?

Thanks!

Rolf
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