Are you wanting to find this one regarding the pvc top seal covers?
A lot of that info is buried in those posts about the process of tucking in the vinyl on the bunk ends. Its one level up under the hybrid discussions. There's searchable information about using pvc for older designs as well.
Hope this helps, understand where you are coming from regarding protecting your investment.....
http://www.forestriverforums.com/for...d.php?p=703435