I filled my FZ1 bars with #8 lead shot and it help reduce the buzziness. I think some others were successful with the Bar Snake and like GMP said, some did heavier bar ends. Although that bike stock had some heavy bar ends anyway, so I just did the shot.
Worth a try if you got some laying around. Otherwise, it is a bit expensive to buy it, cause it will come in a 25# bag. Besides that reloading supplies are hard to find right now.
Out!