Almost in Huntsville, al 04 950. 34 k on it. Faccet do. Recent valve check. Bike is behaving like its running out of fuel sporadically Doesn't sputter or die, but stutters and looses power Idles fine, runs well at low speed, won't run well above 50 Continuously. Bypassed fp made no difference. N Red some help on what is wrong Help please!