hey all, im thinking of building up a trials bike over easter. i won this bike on ebay, which has some alright components.   im trying to decide on a new frame which is stable when on the back wheel. i plan to buy second hand, Im just not sure what to look for.  ive been riding for about 2 years... most of that XC(cannondale F800) and ive recently got a jump bike(DMR sidekick).   Any help would be appreciated  cheers  Charlie  PS anyone know what make/model the frame is on ebay?