My arrows want to go left increasingly with distance. Would I be right in thinking that this is a spine issue (spec. arrows to stiff?) I have checked: sight picture; ensured sight bat is parallel to riser; not canting bow; arrow slightly left of string, button soft 70" GMX RH with UUkha limbs 36", ACE arrows 30.52 ~40/41 OTF I am considering going down a spine to ACE 570 and I did read that this is common with UUKha limbs. Just wanting to know if there could be other reasons before I fork out on a new set of ACEs.