I am not sure what weight on the driveshaft will cause vibration problems. But yesterday while I was changing my oil I noticed some stickers on one side of my driveshaft. I know they don't weigh allot but neither does the aluminum driveshaft. If they balanced the driveshaft without them which I am sure they did this might be causing some of the vibration issues some are experiencing. I have removed all of them from mine.
