Ok, I'm running a bladder on my os la 15 with a fox universal needle valve. Right after the needle comes the bubbles. None before it just right after. I just put the thing in water and put pressure on it, no bubbles. Then pulled a vacum on it and no water came in. What gives here?? I'm puzzled. Sure can't get a good run with an engine you can't adjust. Any ideas?? Thanks, Eddie Fulmer