4-jaws get easier/faster with practice. I find it helps to think of it almost as a pair of 2-jaw chucks, 90 degrees apart. Concentrate on getting the stock correct with respect to jaws 1-3 first, then get it correct with respect to 2-4. (Then go back and verify 1-3, of course, and make small adjustments). You'll need to leave 1-3 loose enough so you can still move the work as required with 2-4, and "loose enough" (but not too loose) is one of those things that comes with practice.
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