With the bumper mounted up flush to the frame the bumper is getting into my fender flairs. The only idea I have is to put some washers or some kind of spacers between the frame and the bumper mounts. think this will work? The gap at the rear corner is not that much and I feel that if i lower the gap at the flair end it will cause the corner gap to decrease even more. will it affect towing ability? what else could be causing this? the frame to body mounts look fine.