The easiest way is to locate the string stops on the cams. Flat points / spots. This is done by having a hook or something that will allow you to draw the bow by holding onto the riser and pulling down or toward you. Make sure it's something that won't damage the string. As you pull or draw the bow, watch the cams rotate and stop. It's a little tricky, the bow will want to collapse back as you manuever the bow to watch the cams. your not going to pull the bow 100%, just hold on tight. Then once you determine which cam is hitting first, you can adjust the control cable in or out (string running from cam to cam). If the bottom cam is hitting first you tighten the cable, opposite for top. You want the top cam to hit just prior to the bottom when you are done. That way once it resettles it should be hitting right on. If you have any other questions or problems send me a PM and I'll have you call me.