man, dot that thing in at 20 yards with your broadhead of choice. then go back to 30 and use your 20 pin and aim at a dot near the top of your target. if your arrows are going left of what you're aiming at move your arrow rest a little right, or vice versa if they are going right. then go back to 20 and dot it in again by moving only your sight. then back to thirty. when they are falling directly below what you're aiming at you'll have found your center shot. then shoot a horizontal line across your target from 20 yards. if all the arrows are within 1" of that line, great - you're done. if not put 1/8 turn in your bottom limb bolt and try it again. if it fixes it - you're done. if it gets worse then take that 1/8 turn out and take an extra 1/8 turn out of you bottom limb. that should do it. it could take up to 1/4 turn, but when you're shooting a good horizontal line you're done. after that your broadheads will be flying great - except they are very sensitive to mistakes during the shot process and wind. who cares if they are a couple inches off from your field pts? i don't. what you want is your broadhead tuned to you, and that's how to do it.