Installed the second left line fuel line. It actually worked out OK. The best procedure for me is to get the bends at the center where the fuel switch will attach done. The vertical rise that connects to the fuel switch must be straight. Cut the pipe to rough length and start feeding it through. It requires a continuous push/bend/adjust/feed outboard of the gear weldment to get it in place. It's impossible to prebend this part.
Ordered more 3/8 line from Van's, since I got the first attempt at the left line too short, but I may not really need the extra line.
Then started on the vent line. This is a bit easier, and almost all of the bends can be made with the pipe bender. Almost happy with the first pass on the left.
Started the first primitive attempts at installing fuel lines. The first version of the left line was close, but I took it out. Got better by the right line. I think it will be OK.