i need help with my pass. door, somehow, after the minor deer incident, (in exterior page) i went to open the pass. door and felt it give out. all play and no open. DOES open from inside. what is this? how do i get at it without wrecking all the plastic trim?. is it all screws and pieces? is it just the lock mechanism? need any parts? need any professional expertise and not my amateur hands? let me know please!