In fact the
last thing I recall him getting het up about re threads
was that he believes only special lubricants should be allowed near a
lens, and that what's suitably for a focussing screw wouldn't be the
same thing you'd want on the diaphragm.
Can ANYBODY disagree with THAT???
Oh, I am sure therre's somebody who disagrees with that. Somebody who
owns a lens with a totally stuck diaphragm, of course.
-tony