Rear window trim question

Working on my 66 Dart. The trim around the rear window will not sit down tight against the window, There is a gap all the way across the bottom of about 1/8" or more as you can see in the pic below. My question would be how ddo I get it to lay down tighter on the window rubber? Do I need to use some weatherstrip adhesive on it or maybe some Silicone? What are my choices?
View attachment 1715297797Thanks Rod
The reason is that the moulding does not attach to the clips at the bottom. You need to take off the inner chrome moulding and bend the clips so it gets tighter when you add the moulding.
Good luck!