Finally I am tackling the problem of how to install the fuel lines from the valve to the tank. Routing wasn't clear to me. And it required modifying two parts that are already riveted in place and not practical to replace if I mess them up. I started with the 783B-R and then L inner brackets. I took it slowly and test fitted as much as I could. I decided to move the hole down and towards the spar as I enlarged it. It seemed like I really needed to move it up slightly, but that creates other problems. It turned out I had to enlarge the hole in the up direction some and it probably needs more. I still have to decide if I want to move the hole up or try to bend the tubing slightly. And I still have to decide where to place the hole for the brake line. Then I moved to the 782B-R and L outer brackets. These can be replaced easily. I'm not really happy with how the two holes intersect on the 782B-R side. I may try moving the holes to the locations shown by the two washers on the 782B-L bracket. And if that works better, then I can replace the one on the right side. Then I moved on to routing both the brake and fuel lines through the gear leg mount. I think I understand how to route the lines at the gear leg now. I was trying to route them through the lightening holes in a landing gear gusset, but I think that just provides extra potential rubbing points and limits the movement of the fuel line enough that it might be difficult to mate the line with the fuel tank fitting. Started work on pitot static angle of attack plumbing on instrument panel. Color coded the connections and cut a long piece of tubing for each connection. Explored different routing options. Thought about which lines, if any, needed a test port. Decided to use a test port on all three types of ports. Haven't decided where to run the lines or where to place the connectors and test ports.