I have noticed the same thing with the channel from Jim Carter, the repro sets are probably all the same. They are really hard to get the bend at the rear of the door right, seem to be overly stiff. I put new glass in mine and the windows are tight but do go up and down, I'm hoping it will loosen up at some point. My old channels were nothing but the metal in most places with very little fabric left. The old ones seemed to be way more pliable too.
Steve
