I have had more bows than I can remember and until now have not had any problems tuning arrows to each. Now, no matter what I do, when I paper tune bare shaft or otherwise at five yards, I am nock high by quite a bit. I have changed the nock point (up and down), brace height, and filmed my form to make sure I am not keeping my elbow too high and adding twist to the string. Most of my pressure is on my middle finger with perhaps 20% on my forefinger, and almost none on my ring finger. Nonetheless, changing weight on my fingers has little affect on nock high, even when I try shooting split finger. I shoot 3 under with a bow that is even tillered off the shelf. I have tried heavier and/or stiffer arrows, thinking maybe my spine is too weak and bouncing off the shelf. I have been at it now for weeks and I am frustrated.
More recently I am thinking it is a form issue. I tried my other bows with arrows that were tuned to them some time back. When I shoot them, they too are nock high, just no where near as much. With recent shoulder problems and loss of most vision in my dominant eye, I am guessing that my form has suffered as I make adjustments. So if it is not the bow or bows, how would my form cause nock high? Thanks in advance for any suggestions you all may provide.