Whomever wrote that advice needs to have a glass belly button fitted so he can see where he's going! He's got his head up his butt to about shoulder distance. In 1955, Buick sent a few engines down the assembly line with .005" oversized cylinders and special pistons to use up some poorly-machined blocks. They used standard-diameter rings. Within the first 1,000 miles, those engines started using oil. The factory fix was to re-ring with standard-bore rings. No joy! The re-ringed engines used oil immediately. Then they suggested a set of .010" oversize rings could be file-fitted to eliminate the oil consumption. The only thing that fixed those oil burners was a .020" oversize rebore, new pistons, and correct-sized rings. A file-fitted oversize ring will have the right gap, but it's not round anymore, creating gaps in the ring-to-cylinder seal, and massive blowby and/or oil consumption. Been there, done that!
Jerry
