Randy , that reminds me of when we used to attach heat shrink coverings to balsa frameworks .. Applying thinned Elmer’s carpenters glue to the frame and letting it dry , then ironing down the edges ... Worked Great !!!
Now it seems I mis-spoke myself .... Went back and checked those Gripper edges , and yes, they were lifting ...

So a little brush with some T2 took care of that ... Still thinking of using the T2 again for the covering...

It worked before (well tested) ... and it’s cheaper ...
Made up the block for the door latch ... Most door locks only go up to 1.75” thickness, so we’ll have to use some “extension” bolts ... Not a problem ...