I just rebuilt my blaster and it looks and smells like its burning trans oil but i made a leak down tester and tested it and it tests just fine just to be sure I've replaced the cranks seal on the clutch side 2 times did a top and bottom end rebuild new crank bearings had crank rebuilt by ken oconnor and cylinder bored and honed with wiseco piston good compression no power and I have jetting right and it gets reallyhot