Well I fletched some 4" feathers on a 29" Axis 340s with my modified Ariz. jig and some 125grn Phantoms. Truly remarkable to 30 yards, at 40 yards the broadhead fell 6" low. How would you tune this? It's perfect to 30, I don't understand the 40 yard difference. Was hoping to get everything good to 40 and call it good. 2012 Bengal 56lbs.