Talked to some guys at the track and they told me they are running -1 +5 on theirs. I Don't know if my bike needs a tune or what but I'm getting killed in straits. I want to be in 6th gear on straits and I'm not as of now. I have maybe 5k miles on this chain. Prob should just get a new one...Was just hoping to throw a new sprocket on quick and call her good.