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Is an extremely insightful and thoughtful post, McIrishman. It hints at the tragic truth that no one to date has absolutely nailed the heart of a golf swing. That is the meat of our agonies and our fascination. Bertholy, I believe, can lead you through that heart (without exposing it) by dent of persistent, dedicated labor, but the progress will be so slow that only a few will stay with it. I predict that within three months Bertholy will only show in this DG with an occasional aside. I also predict that you will reach your goal of scratch.