Hi all:
Years ago, 1980's, I tried to remove the rear brake drums on my 1956 Dodge when I was restoring it. For love nor money would a puller move them. One of my auto parts store guys recommended loosening the castle nuts a turn or two and driving the car around the block a few times. Worked like a charm! I used this same technique on my 300F to eliminate certain words coming out of my mouth so I would not have to hear the wrath of my wife.
Dan Reitz
Bell Canyon, CA