I recently took one wood shaft and put a nock and 145gn field point, then shot it from about 8 yards. The arrow fly's true for left and right, however it was nock high. I began moving my string nock up and down hoping to get a true flat arrow flight. The result was that as I moved the string nock it got worse or better, but never got a level arrow. The best I could get was about a one inch high nock. Shooting arrows with feathers, they would shoot flat into the target,but the bare shaft still was a little high.
Is a nock high normal or O.K. if the feathered arrows are flying true?
Again, left and right are perfect, so what is needed to get it level up and down?