Metal sided? I had the same problem with my Jayco 19RD TT. When driving in the rain it leaked through the seams of the metal siding in the front. Never leaked while parked and Jayco never was able to fix the problem. I think it tends to be a problem with all metal sided RVs. Sometimes that water never comes through the wall and we never see it until years later. I had a couple of metal sided TCs that had the same problem and was never noticed until a lot of damage was done. I think it is worth the extra dollars for fiberglass sided RVs.