Thanks for all of info guys. I took a ride to the new Field and Stream store in Henrietta today and purchased some Nocturnal lighted nocks. I put them on a brand new set of carbon express piledrivers. After a slight pin adjustment, which I believe was related to heavier fetching on the new arrows, they seem to shoot virtually the same as my standard nocks.10, 20, 30, 40 yards.
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