My nephew decided to stuff some change down the window channel of the diver's side front door. You can now here it rattling around in there. I'd like to remove the door panel in order to get the change out from the bottom of the door. How difficult is this? I just need it off enough so that I can stick my hand in to get the coins. As I do not have a Bentley manual, I would really appreciate it if someone could explain the easiest way to take the door panel of, or at least to partially remove it. Thanks so much.