Wow, mine seemend to be much easier. I just applied pressure to the bezel with my thumb and unscrewed the lock cylinder with my other hand. It was definitely easier with the glove box door removed.
Yea the door in my convertible was easy to unscrew. I have a '68 door and the '69 door in the pics that the lock assembly didn't want to budge. That’s why I suggested the large screwdriver.