Glass channel installation

Car Pit

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Guys,
The glass channels in my '30 Tudor were non-existent when I acquired it, so I'm not 100% positive that I know where I should use foam or if there is another material that is supposed to go in the bottom glass channel. I saw where some guys said use u channel foam so the glass seals against the outside window frame, but I'm not sure I follow exactly what you mean.

Does the illustration below show the best use of foam and glue?
 

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    glass seal drawing.jpg
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I believe that the bottom "foam" does not exist. There is glass bedding with adhesive that holds into the metal frame channel- IMO. At least that is what my fordor now has! There are bumpers at the bottom stop the glass from dropping down further.
 
i have used windshield setting urethane in a caulk tube.

also 3m sells a 2 part epoxy style channel bonder but you need a special dual piston gun to apply it unless you cut open the tube and manually mix the two together
 
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