Hi everyone. I am trying to help a friend that owns a Ftp 900 and have used it alot the last 4 years. He shots for the Swedish national team. He has had problems that the gun doesent shoot consistently and he bought a Huma reg because there is no AA service in Sweden. As he thought this was a reg problem. But problem remain. I told him that maybe he need to take it apart and clean the hammer. So I will help him with this. The problem is that the guy he bought it from took away the air adjustment screws and only have the covers left for the adjustment screws. He has the screws but not in the gun. Could someone help me how the gun should be setup in a zero point so we have something to start from when we try to adjust it. Is there some start position how the set up should be? Greatful for any help.