Originally Posted by BRT
I wouldn’t say it is softish. More like it undulates. Other than the section behind the cockpit which was there from day one, the other areas seem more noticeable over time, as if the OSB board has sagged and you can tell where the framing is located. I thought maybe this is what happens over time.
then your OSB must be sagging in between the structural steel framing
not sure what you can do
i had a TT once that did that, but did not have a sandwich board with foam and steel framing like your Thor.
it only had 3/4" plywood