i have seen the mod on here, i think pualieb or phragle posted it, i personally went for the banshee one from ebay, $20, uses 5/16 line just like my 34 pj inlet, just for the added piece of mind, it's of one piece and and wont leak, the added nipple in the modded one looks like a good place to leak ????
the one linked above talks about modding just the handle, the one on here involved dremeling out the divider inside and also adding a bigger outlet, but it wont flow anymore than the inlet of the carb or outlet of the valve
imo, spend the $20 and get a banshee one