I need to trim the top interior pad of the door panel (no. 5 in the attachment) in order to obtain enough clearance to close the door required after the installation of a vertical hinge. I plan to remove about a third of an inch of the pad at the point where it meets the dash when closed and then recover with existing material. (The alternative would be to notch the pillar trim, but with that hard plastic, there would be a hole.) Can the top pad (no. 5) be removed without removing the entire door panel, and does anyone have a procedure to do the same? GM says the metal retainer (no. 7) has three downward flanges that hold it to the top of the door and I know that no. 7 is a separate piece. The door panels have already been off and I am trying to keep their removalView attachment XLR Door Panel Parts.jpg down to a minimum. Thanks.