Yamaha DTXpress/DTXplorer/DTXtreme

Hello everyone! unfortunately my DTXpress module is dead because of 
an outdoor gig ( the rain sucks! ) but anyways I ended up buying the 
Roland V-drum TD-8 module.. I hope you guys don't think I am a 
traitor! :) anyways I was wondering, all the pads from my DTXpress 
work except for the high hat controller pedal, that doesn't work at 
all.. Does anyone know if there are any special settings I am 
supposed to use?.. any help would be awesome, and thanks again in 
advance!, raj