For the record, I'm working on a 2009 re-write. Some contemplated changes including pulling the grip panels to look for rust (recently an issue with NEW Rugers as a few seem to have skipped the "thoroughly clean the bluing salts off" step!) and a discussion on how some wheelguns want to tightly lock the cylinder in place while some want to include a bit of rotational slop.
Also more gun/make specific notes. Stay tuned.