We have a 1985 Coleman that has a flat (about 1" wide) beige rubber "gasket" attached to the underside edge of each bunk end. When the bunk is pushed all the way in this flat rubber strip blocks moisture from getting inside under the bunk, I guess. So it is beginning to crack and tear as we pull the bunks out, and it will need to be replaced. I'm looking for the proper name of this piece so I can source a replacement. Thanks!