Today I added one gallon of fuel to each fuel tank. I selected the left tank then turned on the fuel boost pump and ran fuel into the system to check for leaks. After letting the boost pump run for a couple of minutes and noting fuel pressure on the guage I shut down the pump and checked all fuel fittings in the cockpit and around the engine for any sign of a leak - and found it all dry and secure.
I repeated this on the right fuel tank and again found no leaks.