I knew a chappy that had a fix for smoking two strokes
hold it on full throttle until it stops smoking
but do not over heat the engine or you will cause big damage
the idea is that the airflow will push out all the old oil from the crankcase
if it still has power it is not the rings, why would a two stroke smoke more with worn rings
it is more than likely a crankcase seal that is leaking gearbox oil into the cases.
replace the seal, bob's your uncle.
jkwobble brisbane
October 2008