Have you looked to see what might be in the bottom of them after 80+ years??
Paul in CT
Ever since I go mine on the road, one of my favorite pass-times is hunting down rattles and squeaks one at a time and killing them. The two things that I found made the biggest differences with my doors were these items.
https://www.brattons.com/30-31-coupe-tudor-sedan-closed-cab-pickup-door-bumper-set.html
https://www.brattons.com/closed-car-bottom-door-seal.html
It there a diagram or pictures were the rubber mounts go? When I got my model a there wasn't a pice of rubber left anywhere. Some sort of picture will help
I have heard one original in my lifetime that sounded like a ice box door closing when I closed the door, only one.
Bob