I have a 2012 FLSTSE3 and I get a kind of whirring noise, like a low pitch howl from the back end. It comes and goes depending on speed. I thought it might just be the tightness of the new belt, but I noticed the chrome axle nut cover on the right side is positioned further to the rear than the matching axle cover on the other side. I started wondering if the bike could have a bad rear wheel alignment from the factory, so I took it to the dealer. They rode it and inspected it and said all was fine and that I could bring it in when they had more time to re-position the right axle cover. Can anyone else say they hear any rear end noise and has anyone else noticed a difference in the position of their right vs left axle covers? Here is a photo of the right side axle cover....are not even with the end of the swinarm?