I know this is going to open a bucket of worms, but what the heck! I was reading a review by Chuck Adams, on the Easton web site. He stated that he and others at a camp spun a half dozen or so, carbon arrows, each and only a few did not wobble. He further stated the carbon is not uniformly spun making the wall thickness different throughout the shaft, hense wobble. So being curious, I spun all my carbon and of the 18 I spun, with field tips, 9 wobbled. With broadheads, 11 wobbled. Now I am not going to slam any arrow manufactorer by saying what brand I use, but they are not the bottom of the barrel. I am thinking seriously about going back to aluminum, because with the speed of these new bows, why not?