So I have almost everything assembled on my brewstand. However I can not for the life of me get the LP gas line fit together like everyone else. What am I missing? Whenever I get it to the point with only one pipe left, I tighten it and the other end loosens. Due to the nature of the tee's in the configuration, there is no way to go from a start to a finish. Hence I am in a bind and cannot completely assembly it. Suggestions?