Engine decking issue(help)

Exactly. I'm betting in the end, what you have is only slower in actual machine time. The new stuff is certainly more rigid, and you can take a bigger cut, and up the speed and feed rates.

Other than that, it's about a wash.

Yeah,you are right, I take light cuts, but I can work on other things while its cutting. Using the one piston and rod in all four corners it is easy to hit less than 1/2 thou variance. Its just slow to set up. Of coarse, I am slow at everything these days!