Are you sure you have both rubber bumpers installed as Turdle mentioned?....there's one towards the back that buffers the silencer,and one in between the vents of the side plate at about 11 o'clock from the shock resevoir.I have a 95,and have never melted through a plate.You could have a bent subframe,or pipe...or combo of both.Someone has'nt tried stacking washers on the mounts to prevent the silencer from rubbing on the tire,have they...another thing to check.