My son's bow has got me stumped. Need some ideas. He has a single cam bow, been shooting finger tab with it. Been shooting fine. He wanted to try a release. So I had him shoot my release to see if liked it. Clamped release onto the string. His groups improved, so bought him a release. Then I added a string loop to it. Now with the loop his bow is shooting about 6" to the right! Tried moving his pins as far right as could go, still shooting to right. So I paper shot it to be sure rest or something else wasn't wrong. Shoots bullet holes through paper. So I bought him a better sight, that has whole sight windage adjustment. Put it on, tried to line it up to arrow shaft on rest. Still can't get pins far enough to right to bring it back left. Its driving me nuts!! Something just doesn't seem right, why would adding simple loop change it so much. Never had a bow do this to me before.