I have a Reflex Gamegetter with the whisker biscuit as a rest. When my center shot is right I have about 1/2 inch or less of room from where my arrow sits to the side of the riser. My fletching hits the riser. How the heak am I suppose to help this problem without changing my center shot. Some arrows fly all right and some go off. I shoot with stright flething, I don't know if that matters, but just in case. What should I do?