So I guess I've never sharpened a semi-chisel before... Sharpening the Husqvarna H30 chain on my saw and I notice that it seems to burr on both the outside and top side of the tooth before I really have that biting leading edge I am used to. Is this just a function of the chain being as sharp as its going to get being a somewhat mid-grade semi chisel instead of the nicer full chisels I am more accustom to? FWIW I caved and ended up buying an angle guide and everything this time (historically I've felt spoiled if I even had a file handle!)...