ORIGINAL: PABuck_HNTR
How tight are the nock points on the string? Do you have nock pinch?
I don't think so. I use a loop, but I guess I really don't know exactly what your talking about
If your knots are too close together around the nock, when you draw it will have a tendency to do exactly what is happening to you. Try seperating the knots of your loop away from each other a tad and see if it fixes the problem.