Yamaha DTXpress/DTXplorer/DTXtreme

hi--i have a new dtxpress, and thanks for all for the info--i am 
having a tough time getting the trigger points set--stock, i can't do 
buzz rolls or get soft hits to register.  can anyone tell me exactly 
how to adjust sensitivity, and save the setting for all drumsets? do 
i have to do each set separately (which i would rather not have to do)
thanks!
peter