I had this done by a local gunsmith and he did the same thing S&W was going to do. However, instead of hitting it with a hammer, he had a thing that looked a little bit like a tubing cutter without the sharp cutting piece...he spun it around the yoke over and over and he would tighten it a little bit as he went. Same effect as hitting the yoke with a hammer, but a little more controlled. I wonder if S&W would have the same device to do this job? B