2007 Dyna Super Glide FXD, 10,000 miles : a few days ago as I was taking a ride with a rider, she noticed what she called a 'rubbing' noise coming from the rear of the bike. I listened for it and heard it, too. The noise seems to start after the bike has been running a while and is evident as I'm accelerating through all 6 gears and while cruising. If I back off of the throttle or pull the clutch lever in, it seems to disappear. I had the bike in for 10,000 mile maintenance and had a new rear tire installed about a week ago. Anyone had this problem or is it just another one of "those Harley noises"?