I had the same problem on my '65 after replacing the hinges and seals. After countless tries and running out of family memebers, freinds, strangers, and anyone else that I could get to help hold the door while I made slight adjustment, I took it to a body shop that specializes in old cars. The owner chuckled and said they changed the foam forumla years ago and the seals were too hard. He claimed only a few companies were using the original formula. For $75 he replaced the seals and adjusted the doors. They look factory fresh.
