Two of my reps had this putter in the Revealer at a demo day at Bayonet , the Edel rep was there and watched, it did not stay square , spun and over rotated, actually did a 360* on a thirty foot putt, so therefore it's not really zero torque, nor the seemore that one is on YouTube. Lie Angle Balancing is different than just toe up balancing or what some people are calling dynamic balanced in that I balance the face to stay dead square to the arc, which is determined by a good fitting. Generally speaking the lie angle, length and spine angle determine a pendulum strokes arc, once that arc is identified each putter is hand balanced until it stays square to the arc, however I can make the putter face match a path that would be different than what the lie angle arc might be ,within reason of course. I hope this helps, take care