I ran across a blurb on a food forum that said laying the eggs on their side for a day or two before boiling would center the yolks so I gave it a try recently.
Damned if if it doesn't work......or at least is did on the half dozen or so pickled eggs that I've had from my last batch.

It doesn't matter much for pickled eggs or egg salad but I can see where it might be helpful when making deviled eggs.

Anybody else do this?