RE: cam lean???
It's really dependant on the cams and the type of bow you have. Basically what it is is your cam tipping off to the side the cable guard is pulling it as the cables load during the draw. Taller cams on shorter ATA bows tend to exhibit it more than say a wheel bow with a long ATA length. It can be corrected with a 'Y' yoke system or a shoot through system (where you are actually shooting between the cables that are seperated with a spreader system). Otherwise you've just got to live with it and hope that A.) it's not that radical and B.) it's consistant from shot to shot.