bigbuck, check the fletching on the arrows that fly well. With my setup, the arrows fly more true when the three feathers are just the opposite of the three blades on the broadhead. When my cock feather is up the Thunderhead blade is down. There is not much of a difference on a close shot, but on shots of 30 to 35 yards it makes a big difference in accuracy. And I'm very, very picky.