The door was down to the shell just a couple years ago when I finished the resto. I removed all of the glass and hardware from another door and installed it in this one. I`m thinking it`s an anti-rattle piece or something like that and it looks familiar, I just can`t place it.
Redfish, the pieces I`m referring to are the the two pieces that run through the holes in the glass and beneath the front channel guides.
I don`t think it`s a foreign piece (to the car), unless somehow it made the transfer from one door to another and I missed it.