Lowell;
As a Lefever fan, I think I can say that most of us are very well aware the Lefever is not a sidelock, no problem there. What it is, is a very "Unique" gun which combines most of the "Best" features of both box & side locks, while retaining very few of the Disadvantages of either. So There!!

Miller/TN
I Didn't Say Everything I Said, Yogi Berra