So I took the topper off my Brat to move some larger things, and when I did, I noticed a lot of the rubber seal was no longer attached to the topper. Most of it is falling off. 

 

Anyone have some good suggestions, or things they've done to fix their seals? 

 

I've been told to try some screws to hold the rubber back up and silicone around it, but the top itself seems so thin, I don't want to damage it, or compromise the already old rubber by drilling into it. 

3M Super Weatherstrip adhesive.