Just rebuilt the entire motor on my 98 RM250 and am curious just how much everyone else's 2 stroke smokes? I realize there are a lot of factors, namely premix ratios, but what is the norm? I'm running 32:1 and mine seems to smoke constantly. I mean, its not a plume or anything, but its noticeable, whereas before it wasn't as constant - It'd smoke at startup and for a minute, but it didn't seem to leave a faint smoky trail behind me when riding. I did switch premix oil though - Went from the crappy WalMart "Autotech" (hey, its all I could get on Sunday here and yes, on the OLD motor) 2 cycle oil to Motul 510 (which is supposed to be a less-smoky oil). Power seems to be great on mine, and I'll do a compression test tomorrow. Just wonderin' what everyone elses experiences are.