I just was working on getting my top down and fund the allen/hex screw that I had mentioned. It's down inside the "well" where the bars go down in for the top on each side. Mine is a '64 but I bet most older fords and maybe other makes have the same adjustment. It is the secondary bar, not the main top frame that is adjusted.
I didn't think to mark it but it's that round cylinder with a hole in it that's sticking out the side of the "box" facing you on the right.
This is a pic of the weather stripping and the screw and nuts that hold them on. As you can see they probably take up that inch of space you have between your window and top frame.
Deb
