Where you hunting, I’ve had this happen after hunting in rain for several days then get a freeze. Actually got water in rest somehow and rest froze up, most people don’t realize how close string comes to rest at launch if rest did not drop you lost half of your arrow speed with vane contact. If you have had freezing temps then I’d say rest. I’ve shot nocks that you could shake out of arrow if you got rough enough just to prove a point and they still fire just fine. A nock per inch compared to carbon is very heavy it would take a very loose nock and very tight string pinch to leave nock on string like that.
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