sorry, I didn't mean move them, I just meant the actual position, the hand is slightly displaced throughout the scale, but not enough to effect it at all. It's a hard thng to describe, but it would make so much sense if I showed you. Obviously the worst thing to do is the flick the elbow every thumb pass. But if the elbow is always slightly out and VERY relaxed, the thumb just goes over, and the elbow makes it less distance.