Echo issues??

[varmint]

I figured that a chain, depending on its length and spacing of teeth, was bound to have two in a row- odd number vs. even number of teeth. Still, after repeated careful sharpening, it still pulled to one side. No other saw does that to me. New chain, no pulling. I didn't even look at teeth, but I guess I would have noticed two in row when I sharpened it, so it must have an even number.