Anyone else having this problem? (finding trim parts)

Just trying to find out if anyone else is or has had the same problem I'm having. I have a 72 Dart Swinger. I've been looking for some trim clips, that hold the chrome molding, that is just under the sale panels. Had to remove them, to paint the roof. I was very careful, when I removed them, but, all but one totally disintegrated. (Dry rotted nylon)

And yes, I have posted this on a few sites, with pictures of the clips, to no avail. I know there are a lot of A-B-E rigs, out there.

I've tried Tony's, RT Specialties and some auto body supply sites, that sell nothing but trim clips. Nothing.

So has anyone else run into this problem? And how did you solve putting the trim back on?

And no, I am not a body guy. This is the first rig I've painted since the 70s.

Thanks for any help.