You always should spin any arrow from any manufactorer before you buy them.I know that I spun a couple of dozen Axis before I got the dozen that were acceptable(perfect) for me.Following the directions and using common sense,the HIT system worked like a charm,and fleched them up with 4in. Duravanes.They group very well,and they are still grouping after several hundred shots.Besides that,with two flo orange and one flo green vanes,they look really cool....Bob