Not being from a TGM background I’m not particularly schooled in the virtues of extensor action. Outside of keeping the left arm straight and the swing radius constant, what other benefits does it have in your view? When I experimented with it a little today I felt that, it helped me establish and maintain a good left arm position across the chest (#4 ?) and get into a pitch position with my right elbow in front of my right hip rather than behind it. Any thoughts?