I broke a nock on one of my arrows last summer. I went to the store to get some replacement nocks. They did not have the exact same kind as what all the rest of my arrows had but I bought a pack anyways. No matter what I do and what yardage or what bow is doing the shooting, The arrow with the replacement nock always hits low. I swear the arrow just doesn't fly the same. Can anyone tell me why?

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