Very nice work, Jim^^^^^^^. You've also got a good sample of this lens!
Nice indeed DogberryJr,
I found that working a tiny drop of oil into the rear seem of the aperture ring frees it up nicely. Mine had the same problem as your, but it's moving freely now.
I have a Summitar (uncoated) on the way. What shade do you boys use on this lens?
Erik.