Beyond the 4 corners, I found the hot water heater leaks, the gray water drain is broken, and there was a little water damage in the cabover that has already been repaired. Nothing that scares me there.
Everything else seems to work great, but we'll get to that in good time.
I attacked the roof with henry's silicon caulking to seal it up until I get that far, plugged the hot water heater lines, and am ready to get at the corners.
I don't feel a great need to make the repairs super structural. If I can get enough wood back into the corners to let me seal them up, I'll build a new corner structure out of 3x3 .120" angle iron top to bottom on the corners to strengthen them back up, cover the damage zones, and build jack mounts from.
I'll use some .090 2x2 angle at the bottom going back and side a little ways to add a little support for the jacks.. ..and I may run the 2x2 all the way down the sides (front to back) so I can move the turnbuckle mounts inboard some. I really didn't like having the tie downs be dead vertical bringing the camper home, it let it slide a little in my bed. If I can move them each 18" or so closer to the wheel wells, it should add ample triangulation and hold the camper a lot more solid.
Depending on the weather, I'll probably start the corner repairs this weekend. I will report back here with progress and images as I go.
