rings are shot?......(if mine is cold, it´ll go 140 ish and will wheelie into 2nd without the clutch, once warmed up, struggling to go over 120.. and to wheelie at all takes a good handful of clutch) also, the machine spews oil out the drain tube attached to the bottom of the airbox, hence, rings are letting oil blow back through the air box....ummm check your intake boots (they connect the carb to the head of the motor) they typically deteriorate over time...