Quote Originally Posted by Fencepost View Post
and be careful to use an equal number of strokes on each tooth to keep the wear on the teeth even.
Absolutely, uneven sharpness from tooth to tooth and from side to side will affect how straight you are able to cut. Again, and not to beat a dead horse, this is why you don't want to use a power tool to sharpen the chain, you can't control how much you remove from each tooth, so you'll end up with a crappy cut quality, even though the chain is "sharp".