I had an accident about 2 mos ago now and had a bunch of parts replaced including the rear wheel and sprocket, the left shock, the dog's ass, the foot pegs on the left side and the left side radiator cover. Since the accident my bike makes a strange woo woo woo sound and I can feel a slight vibration in the foot pegs, rear brake pedal and handlebars at about 40 mph (and sometimes when I slow down all the way to a stop) when I pull the clutch in. It seems like the vibration is coming from the drive sprocket as the belt goes in and out of the sprocket. I was concerned that the belt alignment may be off a little but I've taken it to a couple different Harley dealers and an aftermarket shop and they all say it is just the belt "breaking in" to the new sprocket. I've driven the bike about 2000 miles since the accident and it doesn't seem to be getting any better. Tonight I checked the torque on the left side of the swing arm and the nut was loose about 3/4 turn. I tightened it up to 55 lb/ft of torque and tested it out, it might have been a little better but it is hard to tell as the problem gets worse as I ride farther (the bike heats up). Any suggestions/comments would be greatly appreciated even if you tell me it is normal because I trust you all more than the dealers I've worked with so far :banghead:. Sorry for the long post.