the other day i was out shooting with a friend and he noticed that my arrow seamed to sit with a slight downward slope. hmmmm this puzzled me. i had my bow paper tuned with my old arrows and it shot fine. i did notice that the gtxt5575 are a bit narrower shaft then what i was previouly using. as we played around with it, we found that if you raise the tip of the arrow till the shaft touches the top bristles then the shaft was almost perfectly staight (paralel with the ground , any ideas ????