How to remove door check strap on 62 Valiant?

Lee, I figured you wouldn't mind if I hijacked your thread at this point because, after all, us '62 Valiant guys gotta stick together (it's a "one-year-only" model in many respects)!

Per our telephone discussion, I did try to contact several 3D plastic printing companies in the area to see if they would be willing to replicate some '62 Valiant and Lancer knobs, but none of them even took the trouble to return my call.

Would anybody know of a 3D printing place that might be willing to print some simple brown plastic Valiant knobs?