You have to understand these cars were built in the later 50's when scrap steel was cheap from de-commissioning Liberty ships Etc. after WWII. EVERYTHING on the cars was heavy. Knock on any body panel and you hear the thunk of solid steel, unlike new cars where they have curves and creases to eliminate any 'Oil Caning' from the thin steel.
If all the gaps are correct when closed your strikers are aligned correctly. When closing softly if they bind a bit your hinges may be worn but just swing them closed a little harder from 1/4 open and you will hear a solid sound as it latches. No harm done but you will get looks from nearby observers as they are not used to the sound. You can also throw your hip into it but they will never latch like the new cars with a bump of the heel of your hand to latch.