I see guns like this from time to time, where there's a slight gap between the frame and the trigger guard. Sometimes I'm guessing it's because of a TG screw that's messed up and not allowing the TG to tighten up completely. Sometimes I'm guessing it's due to overzealous refinishing work. What do you think is going on here? In this case it's very slight. Possible it left the factory this way? Gun is circa 1891.