Yamaha DTXpress/DTXplorer/DTXtreme

I have just bought a RHH130 to add to my DTXPress II Setup and have 
a few questions which somebody maybe able to answer (ODG :) 
1. The instructions state : "In the Trigger Setup Edit Mode Gain, 
Minimum Velocity, set the Gain to 40%" does that mean the Gain 
setting or the MVel setting?

2. Is there anything the old HH foot controler can be used for, I 
thought maybe I could connect it to the kick pad to act as a double 
bass but that did not work.

I am awaiting the delivery of my 120S Snare Pad to finish my 
Christmas Upgrade :)


Thanks

Mark
Wales, UK