I think I might have suggested this when you first asked about your engine shaking
It probly wasnt a defective part. Over time the rubber does compress, which will make it rock more causing the mount to become more damged.
I replaced my lower engine/trans mounts on the SE due to engine shake(atcually was broken in two). I replaced them with urethane after market parts. Half the price of the dealers insufficient parts.
Hopefully some of your issues will subside since the shaken is not going on
