Right or wrong I always run 40 or 50:1 at the track. My MX bike runs great like that. Only one seizure ever on the NSR and I'm pretty sure when some one read a main wrong and installed a main 2 sizes lean that might have been the problem. I think thats what all those white spots on top of the piston were. Good point Dave I was thinking the same. Charles do you know the math on oil to fuel versus fuel to air? I try jetting for temp. with my oil ratio
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1995 A kit TZ 250
1994 Rothmans NSR 300sp SOLD
1998 RM 250 freestyle/motorcross
1998 Meathanol burning CR 500 AF super retard/motorcross/sand dunes/play bike