I installed my boost elbow that I bought on ebay over a month ago. But I can't seem to get the boost to stay below 30psi when in OD, it will easily hit 38-40psi when in OD. I have the allen screw as loose as possible, any looser and the engine vibration will let it unscrew itself with the spring pressure. So right now I can almost unscrew it using my fingers and no tools. What am I doing wrong?