Need to replace the plastic piece that screws into the shaft of the door lock plunger that protrudes above the trim. Went to the dealer and all they have is the plastic piece already attached to the metal rod, which means taking apart the interior door panels. Anyone know where to get the plastic pieces only so I can screw them in?? Went to local part stores and all they have are the ones for GM and Ford, replacement types that are plastic silver plated and the threads are much smaller -- UGLY TOO!! Need the beige

thanks in advance