I rode my kdx for two hours strait the other day, and when I stoped for a drink and left it in neutral it died, it would no longer idle as it had when it was cold. so I backed out the black air screw on the side of the carb, and this helped it idle. after it cooled down and i cranked it, it idled very high and I lost the top end hit, but gained four stroke torque. the power band is unidentifiable, it sputters on the top but runs great if you short shift it. how do yalls kdxs run, is there a noticeable top end 2-stroke hit or just torque, does yalls flatten and sputter on the top end?