I took my bow to a pro and had it adjusted. One of the things he said I needed was a new string. He made me one and then replaced the release loop by putting it in the same spot as the old one vs. re-calculating where it needed to be. I guess the concern is, he made the assumption that the loop on the original string was put in the proper place. Currently, I have been playing with tuning the bow and I believe the nock point is too high. Seems like it takes very little adjust to make a fairly big difference, so i suspect it is close, but not perfect. Unfortunately, with the string/loop, I can not vary the nocking point to test my theory that the nock point is too high b/c the loop will not slide up or down, it is stuck in the existing spot.

I guess there are a couple of questions here:

1, how do i calculate the nock point
2, do you know any way that i can move the loop w/o having to remove it?
3, if i remove the loop, can i attach my release directly to the string to test nocking point?
4, is it true, a small adjustment in the nock point goes a long way