Yamaha DTXpress/DTXplorer/DTXtreme

Upon purchasing my DTXPRESS II system over a year ago, I immediately 
knew I wanted to upgrade the hi-hat pad.  I wanted a more natural 
looking and feeling cymbal, so I chose to purchase a Pintech Zenbal 
Hi-hat cymbal.

It's been disappointing.  First off, without any module modification, 
the zenbal cymbal carried very low volume.  For months I've been 
modifying the settings to get it to play loud.  I just can't push the 
module any higher.  I can't get adequate volume out of the cymbal.  
On top of that, simultaneous hits with the snare and the hi-hat 
eliminate the hi-hat strikes.  This has bummed me out.  I again have 
modified the rejection settings on the module but can't keep it from 
continuing.  I'm out of ideas unless someone out there has a similar 
setup and has it working well.  Please let me know your tricks if 
you're out there.

This foul path has led me to some conclusions that may or may not be 
entirely true.  My first thought is that mixing drum components from 
different manufacturers is tricky and troublesome.  My second thought 
is, naturally, it is better in my case to use a Yamaha-based product 
to ensure compatability.  So if that is true, what Yamaha pad is the 
right pad for me?

That has led me to research the RHH130 pad now included in the 
DTXPRESS III.  It has the right "Look."  But I have these questions:

1) Is this pad compatable with the DTXPRESS II module?  Will I have 
volume issues?

2)  How does this pad work?  The write-ups on the web say it attaches 
to a standard hi-hat cymbal stand (which I have, albeit an old one).  
How does a standard hi-hat stand peddle manipulate this pad?  Is the 
pad split into two parts are the top and the upper and bottom halves 
trigger the pedal activity?  What happens to my current hi-hat 
pedal?  I assume that's not used anymore.

Thanks for any helpful responses in advance!