Ok guys. when i first picked up my 929 about 1k miles ago i noticed a very obvious vibration that seemed to be coming from under the gas tank at about 3800 rpm through 4k rpm. everyone i talked to said it was the flapper and it was normal. ok... fast forward to about a week ago... the noise and vibration is GONE! what happened. bike seems to run the same. i dont feel any flat spots or anything like that. am i crazy??? bike is going in for a valve check and airfilter/plug/oil change at the end of the season. im just confused where the noise went.