thats what I thought.I ran 40:1 first tank(synthetic).It was fine.My plug was fouling everyother ride,and tons of spooge>BUT,silencer had no packing!!I had it repacked and had the carb worked on(he said air bleed was screwed all the way in,getting no air).Now the thing hauls.Has tons more torque.But i threw it down the last time I rode when my son wrecked.Now it will not start,there was fuel running out the overflow.I think I filled the case or cylinder with gas.Next Im gonna change plug,drain case and let air out.How much oil does a 2000kx 250 take?TRANS TOO??oh ya--thanks in advance!!