I was recently attempting to tune a fiend's Mathews MQ1 and wasn't having a great amount of success. No matter what spine I tried what kind of rest or rest and nock position The thing would not make a decent hole in the paper (yea I know, but it's important to this friend). Finally I told him that the only fix was to twist the string to bring the cam back into proper time. That's correct, timing was the answer even on a one cam. He resisted because his draw length was exactly what he wanted and he did NOT want to shorten it. Even though I recommended the opposite he is now shooting a shorter draw length and making good holes in paper.