I have all of the mentioned guns in my collection. The rotary bolt guns, when they are worn out, would be a nightmare for the common man to tighten up. Happily, it doesn't happen very often. The Lefever is a wonderful gun, not to hard to tighten up if it gets loose in the breech, but the "large cocking hook" has nothing to do with this ease of tightening. The ball joint is the secret and is easily adjusted. The Winchester 21 doesn't need any "superior design" to be a great gun. It rarely gets used enough to need tightening and if it does get to that point, a little bit of excess material injected into the locking lug surface will tighten it up for decades. The end of story is that a worn out rotary bolt gun has to go to a talented gunsmith and the others can be fixed at home. Again, end of story.
