Loud Squealing Sound

[nomad1600]

Hi, New to KawaNow. I enjoy the info about the Nomad. This is really a great site. I have bought a new 2007 Nomad and only have about 600 miles on it. Ive had it back to the dealer but they are of little help. My question is- I have a loud squealing sound that I think is coming from the front end somewhere. It happens if I hit a hard bump in the road like going over some railroad tracks. It will last anywhere from 3-4 seconds to about 30-45 seconds. It will at times quit when I slow down and then it just suddenly stops. I have looked over the whole bike and nothing is loose or rattles. It does not do this every time you hit a hard bump either. Anybody have any suggestions or have had the same problem. Thanks for the help.