I replaced the first rubber, and after two turns around the block it ripped the new one clean off too. I then took the two rubbers put one each side of the x-member and made the washer on the bottom. I first tried a different bolt, but it turned out to be to long to start compressing the two rubbers, and the only thing I could find, was an A12 head bolt if you would believe me! It was from the original engine, I left one box with some parts when the guy came to buy it. I have driven it with vigor since this change, and I'll eat my air filter if it manages to break this setup...