cabover water damage

I have to hope we don't have rot. I had not noticed a leak from rain, but the first cold/snowy weather we had, I was running heaters inside because I hadn't winterized yet and the front had lots of icicles that hung off the cabover until it warmed up.
I was removing the bedding and noticed the wetness. Just in the corner on the floor--the sheets were wet there and the corner was black already--so I assumed it was the edge caulking. I put on some new caulking--I had some sikaflex left over, but still thought all winter without a thorough sealing would be a problem, so I bought a cover rated for snow and wind and put that on until spring.
I'm going to remove the metal edges and put eternabond on the corners. Then reinstall the edging with stainless steel screws and install some new trim. That is what I did to the two rear seams and it appears to work well. I also redid all the roof seams and openings with eternabond. I had bought the supplies for the cabover seams but didn't get to the project last summer.
Good luck with your repairs.