well you must we the boss of sketchliltony said:i ovalized every hyper core ive ever had to the point were tape wont fix it, chuncked 2 gm's wore the other 2 down. dehubbed my hyperforance g (not all the way but it was annoying) and ovalized it, in the front!(last hyper i ever rode and will ever ride) these hypercores are going to suck so much worse