Factory parts- several of the 1989 (maybe other models) had a sliding bathroom door, fore and aft to keep the hallway open. It worked with two plastic glides sliding in an aluminum rail at the top. The bottom of the door was secured by sliding in a plastic trough. I would like to duplicate that in my 29foot, however even after calling Jackson C3enter 2 or 3 times as well as speaking with an Airstream dealer parts person, I have spent $46 on parts, which I have discovered only one is needed. The rest are for some other setup. Can anyone help me here, especially with a part number for the aluminum rail?