rubber gasket bond- roof rail

[john108]

1968 Charger
Do you bond the rubber gasket into the roof rail molding?
If so, what do you use?
The existing roof rail molding appears to have something there after the old gasket was removed.
Thank You

[BLK 68 R/T]

If I remember right it's not bonded to the rail, except for a small dab where it curves down right above the vent window. Think the rail has an actual joint there. I put a strip of dum dum on mine.