im building a engine for a friend of mine. i split the cases cleaned everything put in there new crank, bearings, etc. well i get it all back together, throw it in my bike to test fire it. it starts awesome but was burnin tranny oil, so i took it all back apart and resealed the cases. long story short, 1st time together used yamabond 2 i think, burned oil, 2nd time together used ultra black rtv still burns i think 3rd or maybe 4th time together i changed the clutch side seal, still burned oil. this thing is driving me crazy, ive built like 3 or 4 blaster engines and never had any issues what so ever but this one is gettin to be a real pain in my a$$. ANY ideas or anything that might point me to the reason it wont seal would be awesome.