I have posted my problem on supermoto junkie and thumpertalk with no real help. Time to try you guys. About 3 weeks ago I jumped on my bike to go ride around town and hooligan it up some. Bike is supermotoed. About 5 mins into my ride in 3ed gear slight acceleration waiting on another rider the exhaust tone changes pitch. This is very hard to explain but it just sounded different all at once. I gagged the throttle bike pulled then started poping and sputtering. I pulled off the road and looked the bike over real quick nothing out of the normal. So I limped the bike home. If it is kept below about hafe RPM the bike runs and pulls fine. Dosnt matter if its hafe or full throttle. When holding WOT sitting still it sounds like its hitting a ignition cut revlimiter at about hafe RPM. SO here is what I have dun. I held it wot and hit it with starting fluid to see if it was lack of fuel. No change in the motor at at. I pulled and went through the carb twice cleaned and checked no problems. I pulled the valve access holes on the head to check valve clearance the chain tench and the decompression mechanism all are good. I checked the motor at TDC make piston is all the way up valves closed. Checked compression. 150psi Banged around my cdi with no results. Pulled my stator cover and fly wheel to check for a spun key way. All is good. Now I have ordered a cdi it just hasn't shown up yet but Idk if its guna help any. Im kindov at a loose on this thing right now. If any one can help at all please point me in the right direction.