I spent four hours yesterday at GT Distributors in Austin working on some of the hundred or so 3rd generation Smith autos they aquired from an LE agency. Mostly 5906's and 6906's. The ones they could not get to function check properly were farmed out to me to "fix". I have attended the S&W armorers course on these guns and have worked on well over 200 of them over the years. Triggers not picking up the hammer 100% of the time, stuck magazine releases, slide stops not stopping, etc. True to my experience, the #1 problem was fouling. These poor guns had NEVER been detail stripped. Wear was minimal, but varnish was the word for the day. I detail stripped and cleaned 13 and got them up and running. A couple had mainspring caps missing (parts on order). One was missing the mainspring entirely. If you have ever wanted one of these classic pistols, they will be for sale at GT's soon. I am going to take a couple of guns in trade for my time. I have a 1066 held with my name on it. There are a few 1st and 2nd generation guns in the mix. I am thinking about the one 645 I saw.