your release has a burr on it causing it to cut into your string you need to remove any sharp edges fron the jaws of the release and you may want to consider using a string loop.
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"Minister of Information for the Royal Kingdom of $Tree"...
The common mistake people make when attempting to design something completely Idiot proof is to underestimate the ingenuity of complete Idiots.
Best I can tell you -- look at getting a string loop. Lots of advantages (minimized torque, minimized nock pinch, etc...). Helped out a lot for my shooting!
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Browning Ambush XB -- 29"/70#
Whitetail Hunter (Carbon Express Terminator Hunter)
Muzzy 125gr 3 blade broadheads
Trophy Ridge MicroMatrix Sight and DropZone rest
Nuthin fancy, but hey... it works!