eng rod balancing thread

There is a guy on YouTube who runs a reputable import axhine shop in Costa Mesa, ca. Lots of old Fiat stuff and the like. He marks and takes all the caps off and whitles them down the the lightest ones weight. Then he takes all the rest of the rods (little ends) and just weigh them outright and takes all the extra weight off the balance pad. He puts them all back together and they all weight the same. Im not sure if this technique is only for 180 degree crank 4 cylinders where both sides cancel each other out or if it also applies to V8 cranks because it sure is easier to do it this way than to hang balance a rod on a jig and get repeatable weights down to the gram. Its harder than it looks using consumer grade scales, but can be done very easily with just weighing each side if the rod straight up and down on the gram scale. Highly repeatable down to <1g on my cheap scale. I'd think that type of range is well within the manufacturers static balance requirements once you give that equalized rod, bearing and piston pack to your balancer.