1997 Ford Thunderbird mileage: 10,100. My driver side door hinge/lock unit (the piece that goes on to the car post to hold the door shut) will not go all the way down so it will fit over the post. Do you know of a way to get that to function again? If I lift the handle up the piece does release, but not far enough to fit over the post. Any kind of help/trick would be appreciated.