There's a channel going around the cab where the door opening is. What goes in it?? There is nothing there in mine.
There's 2 of them! Some call it weatherstripping, some call it windlace. There is a rubber product that "glues to the door" and a rubber product that fits into a channel on the cab. Get them right, and your doors shut good and sound. Otherwise, it's another thread.
The windlace threads into the channel. I will haVE PIC.S OF IT IN THE NEAR FUture in my 53 assembly thread.