ORIGINAL: BGfisher
Hey Art, won't going from vanes to feathers reduce the dynamic spine of the arrows? I think you got that wrong. Along with the other stuff you said, which I agree with, his arrows might be acting underspined now. That's especially true if they were on the edge to begin with.
Thats what I thought too. Not to step on any toes here.... Art if you got it backwards its a rare event... I've learned a lot reading your posts.
Who put the feathers on for you? If you did it yourself what kind of jig did you use... have you tried numbering them to find out if its an arrow issue? Most likely though, as said... I'd recheck the nock height and reset the center shot first... once you are confident that they are correct... then I'd be concerned.