Started working on the fuel tank fittings and such. Spent some time shopping for fuel hoses and all of the fittings that I needed for a fuel return line. I got all of the fittings in, including the sender and filled the tank with AvGas to leak test it. It was also a chance to take an ohmeter and test the senders function. Worked out quite well. Went to fit the tank, and used that time to cut out a hole in the rib for the fuel return hose as well using a hole saw.