OK, for those of you with enclosed trailers, roof seams especially if you dont have a one piece roof requires maintenance at the joints. Also if your nose cap is the thinner plastic one, caution, its breaks down in sunlight and degrades. Mine developed 2 large cracks. I sealed them up with black RTV for the time being. Contacted the mfg, I was barely out of warranty, but know the problem existed inside of warranty. But they did send me a brand new HD thick fiberglass nose cap, all the butyl tape, self leveling sealer compound (Manus-Bond 76-AM is gray) all new fasteners and aluminum trim and I did install it last weekend. But noticed all the sealer was degrading on the roof seams (joints between panels, not where it mounted to the trailer) so I had ordered a bunch more of the sealer and cleaned off all the old stuff and re did all my roof seams. Didnt feather the edges like the mfg did, this allowed it to lift over time sooner. I went on thicker and left the edges thicker also. Just a head up. Being as you cant see the roof, it tends to go un-noticed. Grab a ladder and inspect it.