Thanks JRandall. I was thinking along those lines. The MH is a 75 Diamond on a Ford chassis. The wall in question is flimsy wall paneling on the inside; I assume there's some type of insulation between the paneling and the siding. The sink/countertop butts up against a wall that has the bathroom on the other side. The bath has a complete fiberglass/plastic surround and the tub/shower is on the other side of the sink/counter in the kitchen. I was thinking of maybe taking that wall's paneling off and then using JRandall's 2.4 trick, maybe driving 2-3 inch decking screws in from the outside and then covering the holes with Bondo and paint. Again, thanks for any additional help.