Yamaha DTXpress/DTXplorer/DTXtreme

hi all from Italy.. 

i have a complete DTXII set (with rubber pads).

I decided to customize a "Wood Dixon Snare" mounting a mesh head on it..
now i need to buy a DUAL TRIGGER to play this snare on my module..
 
well.. many vendors says that most part of the existing triggers do
not work properly with Yamaha modules... how possible ??... surely i
don't want change my module with ROLAND...

Can You suggest me a working DUAL(centre + rim) TRIGGER ??...
(a link to buy it on internet will be well appreciated)

Thanks and up Yamaha.

Gianluigi