Carl,
I understand your point. The ball sits inside a cup that's about 1 inch deep. The shape of the ball and stem is designed to allow the needed movement. Stick your left thumb loosely inside your right fist and wiggle it. If your thumb were thicker just outside your fist, then the wiggle would be restricted.
The area above the ball cannot be too thick or it will not pivot properly. If the stem contacts the top edge of the cup, then it might snap the ball off.
Well that's why you are the T-5 guru and I am merely the guy who gives flash burn to everyone else in the shop.
Carl
