I'm familiar with the door seal issue with the AD trucks. There are two different thickness seals and they can be installed backwards if not careful. I went through that with my 49' It's been 3 years and I still have to slam the crap out of the doors. I don't want to go through that with my 70' I installed one seal yesterday and left the door latched overnight and it conformed some. I know it's not an alignment or latch adjustment issue. They were lined up and latching perfectly before I installed the seal just the same as my 49 was. I've ordered a set from Steele. I'll try it with the other door for comparison. If it's better the other seal is getting replaced. I'll post back when it's done.

Thanks

1949 Chevy 3600
1975 W-25 Hurst Olds
1970 GMC 1/2 ton Fleetside
2010 Chevy Silverado