shoff

I am trying to put my fuel pressure regulator back on and I want it to face down on the injector line. When I try to screw it on it only faces up. How did this change. I did not do anything to it? NEVERMIND I GOT IT, THE NUT WAS BACKED ALL THE WAY UP TO THE BODY OF THE REGULATOR AND IT LOOKED LIKE ONE SOLID PIECE......WELL ITS NOT.... YOU CAN MOVE THE NUT DOWN AND TWIST THE BODY TO WHATEVER POSITION YOU WANT BEFORE YOU TIGHTEN IT DOWN.