Wyoduster, I would not panic over the lock setting. As long as the lock plate does not protrude over the edge of the barrel flat, it will work A vent hole at the bottom of the pan has been demonstrated to be just as fast as a hole at the top of the pan. Larry Pletcher did this very scientifically and published it on His BlackPowderMag site. I do not fully believe it myself :-) but certainly it is better than throwing the stock blank away or trying some weird fix.