Kevin,
With some of the really bad one's you show here (thank you, BTW). Could the guns be salvaged with the installation of a ramped barrel from a good maker and properly installed? Seems like the only hope for a couple. What say you? Might even be the upgrade the owners were seeking, and really good case head support.
Since my big ten feeds about everything like clockwork, I have left it the hail ALONE.
If it ain't broke, DON'T FIX IT!
I would think so. Wilson fixed my Colt by squaring up the frame and putting in a ramped barrel. The sucker is a real shooter now.