Fuel Dot on Plane with a COWL (Not sure of Setup)
Another option:
1 Line with clunk to the carb,
1 Line as overflow/pressure line to the muffler,
1 Line with clunk connected to the fuel dot for filling/draining.
IF you don't happen to see the excess fuel in the overflow before it gets to the muffler, it isn't a big deal, you'll just waste more fuel.