I hear a lot of talk about .404 chains for the big saws. I have a 084 that currently has a 3/8" sprocket and bar on it. What would the advantage of running the bigger chain be? The 3/8" should pull easier, if you look at it from a physics standpoint. It is cheaper, and a heck of a lot easier to find. In milling applications it would take less material away. I am sure there are good reasons to use the .404, but I do not have enough experience with the larger displacement/bar chainsaws to know why. Thanks in advance.