49 lb. at 28 inches, and anchoring index finger in the mouth you should have some gap out to 20 yds. at least I do. Move your nock down ,and shoot a bare shaft at 15 to 20 yds. You will more than likely be very nock high. Keep moving your nock down until you get a straight arrow with a bare shaft. Your bare shaft, and fletched arrow should be straight,and impacting in the same place. That should let you know what is going on.