For those of you doing your own mounts I thought this might be of interest: SEE BOTTOM
As far as another source I have no idea. But you could try filling the mount > yourself with some very soft pourable substance. It seems to me like filling > it with anything that is kinda stiff will increase vibrations alot. The > softest polyurethane casting compound that I found so far was shore 60A > which was still way too stiff. I've been looking for something softer and > might try filling in the gaps on the rear mount if i ever find something.
