Ive had trouble for the last few months of my brake being crap and doesnt hold one bit. So I'ts just not possible anymore to really do big stuff or land on edges. My brake set-up at the moment is a try-all rim, grinded once with a stone disc , no tar , water bleed, koxx yellow pads. I Used to have an onza hog rim which i ran vaious pads such as koxx browns, echo reds, majic pads, heatsinks, plazmatics but none have held well. Even zoo pads did not work well on them for some reason I cant think of what else to try, i have bled my brake various times but that hasnt helped so if you can tell me any ways to improve my brake please tell me ( DONT SAY TAR )