Some people claim better accuracy from flat nocks than omnis. Some say half moons shoot better. Your bow WILL shoot all fine. If you have an issue using something other than omnis your warranty is history. I personally shoot omnis in my Turbo XLT II. It shoots better than me so any perceived gain in accuracy from another nock wouldn't be noticed. Another thing, some of the people who claim better accuracy from other nocks are the target guys shooting 80-100+ yards.