There is a really good spray adhesive at Menards that say epoxy on the label, It might be worth a try, I used to use the 3M adhesive.

Also I HAVE used the Gorilla glue on a 3D profile plane once, and its very tricky to do right compared to the spray adhesive. I think they called for using close to 100 pounds of weight on a 40 sized wing !! the advantage of that was they were forcing the glue to go deeper into the foam core, not just adhere to it...