Yamaha DTXpress/DTXplorer/DTXtreme

Is anyone else experiencing problems with the 3-zone ride cymbal that
comes with the special set?  My cymbal only plays the bow sound, no
matter where I hit it and no cup or edge sound.  I've returned two
faulty cymbals so far and am beginning to wonder if others are having
problems like this.  Also, my hi-hat and other pads cut out
occasionally (stop responding in the middle of playing and only start
responding again when I turn the module power off and on again).  Is
this a problem with the module?  Could there be problems with the ROM?

Any information you can provide would be greatly appreciated. 

Thanks,

Bob