Have a 1990 Hatch with the B-series. All 3 Mounts are new, and a stiffer Urethane than stock. The problem is the Driver's side mount is "walking" off the steel tube where the bolt slides into and the mount makes contact with the metal part of the mount attached to the frame. Is there any solid insert that I can put in to keep it from moving? Anyone have this problem? I do not want to buy another mount but just need something to put in the spaces.