Yes, they do. I think it was quoted a few pages back, too. But the measurements he decked to correct don't exist in an original block with original pistons, so more than a "deck the block" decree is needed. I have no doubt it will do wonders for a poorly designed set of replacement pistons. But is it necessary for a custom set of Ross or Diamond pistons? Probably not.

TOHCan posted the optimal quench distance and compression height. Armed with that, with compressed gasket thicknesses per manufacturer, and with piston-below-deck measurements an educated decision can be made regarding decking the block.

I have a lot to learn too, hence the start of this topic.