So I am finally ready to reinstall the headliner after fixing the leak in the roof and replacing the sound deadening mat. After putting as much effort into this project as I have I was wondering if there is a "proper" way to reinstall the plastic bit that runs down the interior from back wall and attaches to the bulkhead (I think they are called rear window surrounds?). When I removed mine it was held on by 2 metal clips at the top and one weird looking retaining bolt? There are 5 bolt holes so I am thinking the PO just put something in there to make it work. Is there a proper way to reinstall or am I overthinking it?