Hi i'm johnny burne i'm from penrith cumbria I recentually started trials when i bought a Onza t-comp 08. I have read mike's guide to validation so soon hope to be validated I will help out as much as possiable on this forum i dont no much about trials but i no the odd thing. I have alot of questions to ask as i want to improve my trials bike and me expand my knowledge on this great sport Firstly how to i grind my rim's as i've been told it improve's you're braking proformance Secondly how do you bleed you're brake's ? as i bought my bike second hand and they could do with being bleeded again as the TPA is right out and no braking really Thirdly is there any website's which i can go on to explain method's to do trick's on trials Help would be great as i am a complete trials newbie and no nothing really. Johnny.