No wonder Pat Rafter had his frames silicone injected in the handle. I had been experimenting with lead tape on my Maxply McEnroes and had popped off the Butt cap and jammed a packet of lead tape in there (without the packaging obviously) to add weight and lighten up the head a bit. It worked wonders. Anyway I could hear the lead tape rattling around in there and was looking to fix it in there. Remembering the tale of Rafter I went and got a small tube of Silicon bathroom caulking and squeezed a healthy portion in to the end of the handle, letting it set up overnite. Well, I cannot believe how stable and smooth the frame is with this setup. There is ZERO vibration . Poly hybrid setup, no dampener, no pain, just smooth as silk. Yeah baby! Now I have 2 more to set up the same way.