1965 Dart 270 convertible!

Ok, everything is apart. Next will be to glass bead all parts.
Two screws were broken so they need to be redrilled. I need to fabricate two new vinyl bushings for the mecanism.
The lack of some kind of grease in the top mecanism was total. A wonder that it could move up and down. I had the same problem on my convertible.
What kind of grease is the best to use on the top mecanism?

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