skyarrow, nice tree! You'll love it. I saw a HUGE improvement with the amount of set my bows were taking when I moved from my tillering stick to my tree. Before, 1.5"-3" was almost unavoidable, no matter how light the bow's draw weight. Now I have several bows that have less than an inch of set AND I can tiller a bow in half the time.
IMHO, the tillering tree has been the best "new" technique I have learned since getting back into making bows in late 2010.