Thanks, I will try the video method. This looks a lot less troublesome!
I am not so happy that turning the barrel bushing is leaving a a light circular scratch or wear mark on the frame under where the half-moon part of the bushing is when it turned clockwise (looking at muzzle). Easy to see on the stainless bead blasted finish. I find no burrs on the bushing, but might be something on lug recess inside slide that I can not see, forcing a tight fit against against the face of the frame. Or maybe this kind of wear is normal when servicing the gun. ???