Update: Have been holding up fine, I took the weaker of the two off and replaced with 3M tape but it was still wobbling like it wasn't sitting in the grove correctly, it was kinda warped. I doubled it up and it did the trick it's solid now.

So this is now a controlled experiment of wether or not Scotch double sided foam tape will hold up to the elements in the same way the tried and true 3M does.