Hi, doing BP revolver videos is a gift to us BP revolver sponges, but I have noticed a few obvious things seen many times in MB videos. The first is that many of his BP revolvers are never in time. The second is that he makes modifications much more difficult than necessary, his dovetails an example. Even with the 1849 tune up there a few monkey motions not necessary and he doesn't address the critical arbor length issue. His 1849 hammer hitting the frame IMO is in part from him narrowing the hammer screw by polishing and an over thick bolt legs.
Don't get me wrong, it's always too easy to criticize, but I always enjoy seeing MB videos. MB supplies a very useful introduction to the wannabe amateur gunsmith.
Regards,
Richard