Need some help.... Drew back (vxr 31.5) and my arrow came undone at the nock at full draw. Cost me a doe. Figured it was a fluke. Practiced all week no issues. Back in stand today, same thing cost me a doe. Headed in over lunch changed arrow and all seemed fine. Drew back tonight on a doe and the dang thing came off again.... is my d loop pinching? Does it have anything to do with the angle I’m drawing back at in the stand which might have been different then when practicing? Thanks for the assistance!