On the pilot side of my M20F the under wing fuel tank drain/sample valve seats against a round stainless washer or plate fitting. There is a gap between the fitting and the threaded sleeve going into the fuel tank.
Fuel has been leaking in this area so the drain valve was replaced and torqued to 30 inch#.
Upon closer inspection the fuel is leaking from the backside of the round stainless plate fitting against the wing skin outboard of the fitting itself.
Does anyone know what teh next step is to address the fix? Thanks