Hi...I had the same problem and fixed it by tying a small piece of wood loosely over some clear plastic tube, about halfway down the flexible blower tube with small cable ties...leave the ties uncut also, this takes out the vibration as the energy is dispersed by the wood and the ends of the ties....a picture woud explain a lot better than words...lol...I'll see if I can post one soon...I don't have variable speed and it was pretty bad before I did this..hope this helps...I tried to post a video I took of the saw running but it won't allow me to post it (wrong format?)