Fuel leak

As Matt said, there are drain holes along the bottom of the fuselage for rain water, one at each frame I think maybe. If you have anything else draining out of those holes, like fuel, then you have fuel sloshing around under your feet and seat where it is not supposed to be.

the tanks are interconnected, if the plane is not level, the fuel is going to flow into the lower tank. The places it drains out of the fuselage are the drain holes for water, nothing to worry about,

I am a new club member and a new owner of an Aircoupe Forney F-1. My airplane has had the header tank removed and now has two 15 gallon wing tanks. My hanger entry has a slight slope and after I top off the fuel tanks (no significant  temperature changes) and push it up the slope a a significant amount of fuel runs out of small holes in the lower bottom of the fuselage and even out of the closed fuel cap of the left wing tank.I am in the middle of my annual inspection and my mechanic and I are trying to solve the problem. So for no leaks found in fuel lines. I am wondering where the fuel overflow valve is in this configuration. The cap vents seem open. Any help would be greatly appreciated! Thanks, Ken Boatright