Ryan, there are so many factors at work. Ganson was not one for nuance. This is not entirely his fault as few magic books, now or then, express the sort of nuance required to really master technique. Further, that was perhaps Vernon's interpretation of the shuffle at that particular time period, and not what Herb, himself, actually did. The best description of the shuffle so far is perhaps the first description of it in The New Phoenix, No. 346, although the illustration is, if not wrong, misleading. The description in Epilogue is not too bad, but still misses some fine points. The way that I learned the shuffle, before running it by Herb for his comments and corrections, was to listen to the DVD, Zarrow on the Zarrow. The reason I say, "listen" to the DVD is because at the very beginning of the DVD, Herb states that although he can no longer really do the shuffle, he knows what needs to be done, and can teach it. So, I decided then and there to learn it from his words, rather than from the visual representation. It made a huge difference. The good news is that we are nearing completion of Herb's book and it will have a very detailed description of the shuffle, its nuances and variations.