Problem with shaft drive (cardan) for my Yamaha Dragstar

Friend, I have read that there is a little problem with the tracker cardan.
There are several friends here on the forum who have already returned to the dealership to balance the cardan on tracker 07/08.
The noise seems to come near the tracker's gearbox. It looked like a bell. GM already knows what happened and has the bulletin. They remove the cardan shaft and clean and put the weights. Result: 30min and new car !! .

i have an 05 vstar classic with the same problem. i researched thought several websites and founf that the seal that is close to the angle drive on the wheel is a simple dust seal with a spring. over time this spring can "cut" through the seal and cause the tube to become loose and "jingle." remove the wheel and slide the tube from the shaft, reagling the shaft and reinstall the wheel. hang onto the tube and you can replace the seal at a later time if you want to. The tube was needed to be installed as a precaution to keep items from becomming entangled to the shaft.