Stalker, I would sight in at 20 yards using field tips. When you have a 20 yard pin set, try your broadhead at 20. If your set up is tuned your broadhead should impact with your fieldtip. If this the impact is different you need to fine tune your bow. Once you have impact at 20 yards at the same point with field tip and broadhead, you are ready to set up the rest of your pins.