Great idea, I seem to lose them after they break off the cover plate, even though I attach them to the firewall, either in a mid-air or after one (slamming into the ground) and at $24 for the valve and cover plate it gets expensive. Out of the ten 25 FX's that I fly most valve assemblies have broke off the cover plate, which seems very normal in combat. I take it that you put the fuel supply line up and over the threaded portion and that keeps it there? I like you're mounting system too. We still fly 2610 and of course Open-B. I was just getting set to order a couple complete valve assemblies....now I'm going the way you described ...thanks............combat season has begun........[sm=shades_smile.gif]