On my 01 Roadking, I'm running a stock single disc brake. When I ride for a longer period of time I can hear the front brakes making the noise as if the pads are touching the disc, they make a constant "swishing" noise. When I lightly apply the front brake, the sound goes away. I took the bike to the Harley dealer for it's 1k service and they originally said the rotors were slightly warped and put a new one on and did tell me that I still may hear the noise. Well they were right, and it's annoying! Anything else I can do??? Thanks for the help!