Anyone in here run .404 chain on their saws? I have a 440 that I generally use to cut large logs and stumps. I use a 24" bar with 3/8 chain. Due to the dirty nature of cutting the stumps, my local rep reccomended using .404 chain, claiming it would stay sharp longer and wouldn't stretch as much. Change out the sprocket and bar and away I go. I haven't yet but was wondering if its worth it and how it would effect the 440 power head. Anyone?