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A friend gave me one of those years ago and i could never fugure out how to use it.
As to the original question did you have to mess with the arrow spine because of it?
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DC, I don’t remember if spine was affected or not. I will try to dig it out later and see. I know you are very much more learned and technical in archery than I am, so what I think is good Arrow flight, you may find to be poor.