I'm at the point where I'm ready to order parts for the LP system. Need to get the copper items ordered still. I have the full securing arrangement for the tanks, pigtails, and everything to the regulator. What I can't find is an answer on what part to use between the flex line downstream of the regulator that transitions to copper or hard line near the base of the tanks. It seems like a bracket should be there to keep the line from flexing. Is the one in the photo what I need? Do others use nothing at all? It's labeled as a regulator bracket, but I have one of those already. Thanks!