When we're dealing with tolerances in the thousandths, or less where cylinder roundness is concerned, I think it would be a good idea to check for any distortion and correct it. A few thousandths off the deck and a quick hone job would be a minimum, in my opinion. I've seen a demonstration where an inside micrometer is tightened into a cylinder lengthwise to the block just enough to hold its own weight, and when the sides of the block are given a firm push, the mike falls out due to distortion of the cylinder. Heating and cooling during a welding job definitely creates a lot of stress.
Jerry
