Yamaha DTXpress/DTXplorer/DTXtreme

I have just set up my new DTXPRESSIII SP and everything seems to work quite well ... 
except for the RHH130.

Shouldn't I be able to hear a difference in the sounds when hitting the hi hat with the pedal 
pressed down (closed hi hat) and the pedal up (open high hat).  It always sounds like it is 
in the open position.  I have tried various kits and results are the same.

When I press the pedal down I do get the close hit.

If, what steps should I take to troubleshoot the Hi Hat.  It seems like a controller issue?  I 
am already using the Normal (MED) trigger setup for the SP kit.  I have also checked the 
wiring.

Any other suggestions or clarification would be appreciated.

Todd