i have a 2005 yamaha blaster that was stock, and when it was down a flat road i could whiend out 6th gear. I then put a full dg exhaust, and boysen reeds on it. I did find out that it had a k&n air filter with a 250 main jet after i talked to a repair shop and already got a 250 main jet, so i replaced it anyway. But, now after all that in 6th gear i cant even hold the throttle down all they way without it bogging out. Any thoughts on why this is happening?