John are you using a release or fingers?
You nocking should be a tad bit above square (1/8" -1/4") using a release.
If you're shooting with fingers, the nocking point usually works better by increasing that distance a bit.

Check for fletch contact, and also check your center shot.
What's the total weight of the arrows you're using, ( also weight of the field point) and draw weight?
Are you lifting your arrows off the rest while drawing the bow, this happens if you're using a loop and it's tied too close to the arrow nock and pinches the arrow as you're drawing the bow.