Ok in studying the manual, see pic, looks like the "weather strip" that goes into the channel has a v shape. The two pieces that I got from our sponsor are flat pieces with felt not a rubber. Maybe I am confused (happens often) and these pieces are not for the channel?
What you have is the generic anti window rattle strip, goes to the inside of the window frame (wipes off the fog on the inside when you roll down the window). What you need is the window wipe strip...http://www.classicparts.com/1951-54-Outer-Rubber-Window-Seals-pr/productinfo/03-712/ And the U channell.....http://www.classicparts.com/1947-50-Door-Felt-Kit-Standard/productinfo/03-611/
