A-body armrest - stripped threads in door’s sheet metal

Ken71Twister said
Need suggestions vs enlarged holes in door panel sheet metal which won’t hold the arm rest. I ordered the clips in the picture but, with panel removed, I don’t see any way to keep clips in place on the back side of the metal. Back side of door’s sheet metal is very difficult to reach.

Would it be feasible to tac weld a thin piece of metal (maybe a flattened base clip retainer)?

A complicating factor is that the screws come thru the armrest with an upward angle (see 3rd photo.

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So I looked into this further and the 1971 Duster did not have the square recess for the armrest clips like the 67-69 Cuda's

I didn't check the Dart so not sure about them.

Here's a pic of a 71 door frame and it doesn't have the recesses for the clips, just a hole.

Damm!! Pretty cheezy way to save a few cents!!

Heres a 68 Cuda door frame showing the slots for the clips.