Agree with Kuger on this one, ALL arrows flex when shot from a bow,recurve,compound,longbow doesn't matter,aluminum ,cedar,carbon arrows doesn't matter,ALL arrows flex when shot it's called archers paradox,just like all gun barrels flex or whip when shot. Check youtube on slow motion/High speed video of both and see how violent a bow and gun can be, yes some are stiffer and spines different but a solid glass arrow at low poundage most of us shoot I doubt is your issue, yes an arrow that's not straight is an issue but figure we aren't shooting X spots or 3D targets at 30-60yds either. Come on 10-15 yds or less is the norm my money still on rest adjustment or tuning...