Yamaha 1300 Tourer - Yamaha 1300 Tourer Fansite

Good evening all, I am new to the site and could use some help.
I have had my 1300 since October of '07 and love it.
But last summer it developed a noise that seems to be getting worse. After several long rides I noticed what seemed to be a squealing noise coming from the right side of the engine when coming off the throttle at highway speeds. Not constantly but often. The dealership can hear the noise but hasn't been able to identify it.
Well the issue is getting worse and now I am getting that noise on a regular basis, just about anytime I come off the throttle at speeds above 30 miles an hour. If anyone has a clue I would appriciate the help.
JP