Is there any great technique for using this sort of beast?

My four jaw chuck has each jaw adjusted separately.
(maybe they're all this way)

But, what I did was turn each jaw out until I thought
they were flush; then I adjusted each jaw symetrically.

Then I spun the thing(by hand), and gauged how close the piece was
to a tool bit, and tweeked from there until it was pretty
much in the center of the jaw.

Is this it?

Or is there a much better way?


Thanks.