What seems to be my problem, some shots are 6 inches to the left, then a couple 6 inches high then couple 6 inches low. the a couple dead on!! No pattern and im usung same arrows\broadheads. And trust me im not that bad of a shot. this is at 20 yards!! Alouth my arrows seem to be grouping in when i shoot but just not where i want them and not consistantly in one spot. Please help. Ifneed more info just ask.