C&B really is a great bunch of guys, they do however take some shortcuts in tuning in my opinion, example sometimes if you are shooting high or low raplph will slide your peep up or down, in my opinion you should never move your peep, moving your peep makes you reach or squat thus changing your natural anchor. after setting your centershot & nock point (either level or 1/8" high, you should draw your bow back to a comfortable/natural anchor with your eyes closed, at full draw open your eye thats where your peep should be set and stay there. now move your sight to adjust for elevation and windage. then move onto broadhead tuning