Hey guys i've got a 2007 yz450f that i bought from a guy and didn't realize how much oil it was burning. I had the top end rebuilt thinking it would solve the problem and it hasn't. I'm thinking that my piston clearances are off and i'm going to tear it down again tonight and check them... do you guys know of anything else it could possibly be? just want to cover all my bases and check everything before i put it back together. It burned about a quarter of a liter in an hour of riding so quite a bit. Any input is greatly appreciated.