Definitely work on your nock rotation. Definitely adjust the fins as far apart as you can and not let the arrow fall through. Another reason I' ve seen Star Hunters eat fletches has been because of the nock point being too low. I always set my nocks between 3/8" and 1/2" above square for shooting fingers.

Are you backing the side pressure fin with a cushion plunger? If not, give it a try.