Not much info in the Factory Assembly Manual -- unless I looked in the wrong place. Sect 1, Sheets 21.00 and 22.00.
When I installed glass runs in the doors of my '54 3104, I felt that trim adhesive wouldn't hold them, plus I didn't want to have to deal with the squeeze out. I'm sure that the next owner would have cussed me when he tried to remove the crud.
I used screws to hold the runs in place. Use the fewest possible. I used
Ace #6 X 1-5/8 Square Drive Trim Screws I originally used some really small screws but found them too easy to bugger the head. They may have come with the kit from The Truck Shop. Probably meant to hold the "grippers" in place. (see the last paragraph of this dissertation.)
The Ace trim screws are threaded all the way to the head. I cut them to about 3/8" long and ground the point sharp. Pulled the glass run tightly into the corners and held it in place with Quick Clamps. Drilled through the glass run into the door channel. Put a piece of tape on the bit to keep from drilling too deep. Sink the screws deeply enough into the glass run so that the window does not touch them when fully rolled up. The flat black oxide finish on the screws disappears among the fuzzies in the glass run.
I wish that I had understood the purpose of the small flat pieces that came with the kit that I bought from The Truck Shop (#51-05705) The kit included door window felt, glass run, and division bars for my '54. I did not use the flat pieces. I believe that they were small "grippers" that should have been screwed to the door channel. Then the glass runs would have popped into them and been held in place. The "grippers" would have been held to the door channel with really small screws ... approx 1/4" #2 flat head Phillips machine screws.(?) You will probably see holes in the door window channel to accept them. Don't know how hard it would have been to stuff the glass run into the "grippers."
Good luck with your doors.
