I am late to the post, but I have been under a rock for 3 months and just crawled out. sigh... anyway, if your arrow shaft has a static spine which is too stiff, you can always increase the head weight and this will help move it back a bit. Since the arrow is spinning in flight, bending the shaft will only make it erratic as to where it will hit probably. Were they bamboo shafts? If so, what was the bow poundage, and what was the static spine. Best of the holidays. Todd.