Okay, I have an 03 and I've noticed lately when shifting from 5th to 6th under a decent amount of throttle, at about 9k - 11k the bike will slip down into 5th gear again... I've noticed the same thing from 1st to 2nd gear when I'm really getting on it. This only happens on occasion and I'm not using the clutch to shift, just rolling off the throttle. Is this something that I'm doing wrong or is it the bike? Has this happened to anyone else?