That's interesting Naj. Would that screw be accessed from the finished inner door side? (where the lock, window crank, etc are)... I looked and see no sign of it. And I can tell you, whenever I remove door card, thats not a step. What is noticeable is the warping (or bulging) of the door card is right at the armrest, so its clearly not fastened to anything.
James
63 230SL