45 lb. recurve 32"Easton carbon 400 with Zwickey 2 blade, 4 in. feathers. Shooting a cobra caliper release. Shooting off the shelf with some rabbit fur glued on to shelf and window. Arrows are hitting consistantly in the same spot but I can see them fly nock end high about 10 yards out. Could this be the release pinching the nock? I don't have a nock set below the arrow to keep release from contacting it. I have tried moving nock set from 90 degree(arrow to string) up to 1/4" nock high and back and it doesn't seem to change the arrow flight.

I want to eliminate this so I get a good straight point on impact and not lose any energy in the arrow.