I know it's going to be hard to give an expert determination without pics, but I will try to give a description and see if anyone else has had a similar experience. I noticed the lower (U-shaped) tailgate seal has slipped off. It looks like it's kind of clogged with sand. I'm thinking a good squirt with a pressure washer to remove the residual sand, and just shove it back on there. Do you think running a bead of adhesive in there would help it stay put? Or would I be best off just getting a new piece altogether? Thanks.