Can anyone please advise the best way to get the chrome attachment that makes the trim on the very upper section of the indoor panel to attach. This is the trim that connects to the plastic piece which hides the seatbelt top, and goes along the length of the window on the inside right next to the weatherstrip.

My was never attached and it seems like it is some kind of a crimped attachment which I'm not sure how to get on. Any advice on getting the entire back panel assembly back on would be great.

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)