In an assembly; What is the prefered method for constraining a ball in a socket?    We constrained a point at the center of the ball to a point at the center of the socket.  This works but it seems like a tangency constraint, which would not work, would be prefered.  We will want to articulate the joint;.what is the best way to limit the articulation of the shaft, that runs through the ball, to the socket.?

I've added the parts and assembly to the message.