I have a 2007 Kawasaki 900 classic LT. I have 1100 miles on it and from the beginning, I have had a huge embarrassing squeal at appx 55-60 mph when letting off the throttle. Not a little whine in the tranny, but a deafening squeal louder than anything else you can hear while riding. Overides the sound of the bike. Downright terrible for a bike so otherwise nice. Belt, crank, or tranny? Any thoughts?