Update: I also installed the thinner weatherstrip from Filling Station (same as Steele). Much better! The rear gap has been reduced from the original 3/8" down to 1/16" to 1/8". Partly the thinner molding and partly altering the striker plates to suck the doors in tighter. Five to six weeks of the doors pulled shut by the clamp had no effect on the thicker molding. The doors could eventually end up being flush if the rubber relaxes more over time.

I don't regret trying the $20 weatherstrip that I used the first time. That same rubber worked fine on my 48 suburban and might have worked OK on the 52 GMC. I decided that whatever door fit I ended up with using this $4/ft thinner molding is what I can live with. $112 still seems like a lot for a set of door molding but I ended up with a better fit for the extra money.
I had a 40" piece of this weatherstrip left over reflecting $12 wasted. The Filling Station catalog recommends 28' of molding for both doors. If you're careful, you can do it with 25' and save the $12 since they claim to sell it by the foot.

Enough messing with the doors!


1946 Chevy pickup, 1948 Chevy suburban, 1950 Chevy pickup, 1952 GMC pickup, 1957 Chevy pickup, 1939 Chevy pickup