With my first bow, I followed several guides and how-to manuals on tuning bows and paper tuning. I never could get a good tear out of it. I eventually took it to a pro shop and had them tune it and all was well for a while after that.
With the new bow, I got it set up by the pro shop, shot bullet holes within minutes and have not had any tuning problems in a year and a half.

I'm not sure of the mechanics of the paper tuning guides though, I just followed them, it didn't get me very far, mainly because my bow had more problems than a simple rest adjustment could fix.