Willie- a quick inspection of the shroud going through the barrel band showed it was off to one side. I thought the barrel was simply off center from the factory. When I loosened the set screw, the barrel sprung, yes sprung, to its neutral position. Apparently, it's abuse from shipping caused the barrel to twist to one side. So, before you start shooting, loosen the barrel band and center it as best you can around the shroud. Good luck