The last stock pulley I bought from HD had chrome teeth, this new one is cast stainless steel. Dull appearance and a little coarse on the peak of the teeth, but the "young" parts guys says that's the way they are. The book's instructions for checking the wear on a pulley is to drag a scribe across the chrome to check for wear. If it's solid stainless steel, that eliminates the layer of chrome that wears or chips away, consequently, reducing belt wear. But, its contrary to the inspection instructions. Is this legit? Thanks.