Harmonic damper/crank pulley-Interchangeable parts issue or manufacture defect?

4spdragtop said

You could oblong one hole slightly. I dont think it would affect anything.

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This is the way March bottom pulleys come, on the big blocks anyway, so they fit 'em all early or late. Pretty sure all pulleys are neutral balance, although it does make you wonder why they ever needed the offset hole in the first place.