hi i own a 2002 arctic cat 90 2 stroke and need more power -top speed tops out at 30 mph i have so far opened up the exhaust,doubled the size of the air to the air box larger diameter tires on rear and modified the fenders.now when i started it after the airbox was installed it would idle but would bog down when the throttle was pushed.so i adjusted the fuel/air mixture screw and took the bog out but now it won't idle,do you think i need a bigger jet or something else?also i want to take the head off and plane 10 thou off it and was wondering about reed valves and spacers -will they help.another thing is the chain and sprocket set(19fr 50rr) can i change it for one that will give me more top end?any other info would be great thanks
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