While replacing the 4th Winnebago roof in a month, Cassone's RV had a 2014 Itasca Suncruiser arrive with a roof issue. This is only 7 yearsold and the roof completely failed. It did not fail from lack of maintenance of neglect. The adhesive bond between the foam and the wood substrate of the roof deck failed. This caused the roof to collapse into the ceiling and rub on the slides out.
Winnebago builds as an assembly line production so if this roof is bad chances are there are many with the same issue. Winnebago has also not been owning their recent roof failures in Class "C" motorhomes so I think it's likely a bad idea to purchase any Winnebago at this time.
I am not sure this roof is worth fixing but will keep you updated when I find out what will be done.

cassonesrv.com
3032 E Main St
Mesa, AZ 85213
480 3575200