I used the cardboard box of the empennage as floor and put the left tank on the baffle (tank attach angles). Than I filled the tank through the fuel caps (with water).

After one hour of preparing the wing skins (deblueing the rivet strips). I found no droplets on the cardboard.

After removing the water (through the drain), I inspected the baffle and tank attach angles and found no leaks.

Next time we’re going to close the right wing tank.

Time: 5 Hours, Rivets: 0/0

Let’s place the Right Wing Tank in the Cradle and fill it up with the garden hose.

Almost there, you can see the floater of the fuel sender.

Hmmm, just as with the Left Wing Tank, again the gasket is failing at the bolts of the main flange. In the Left Wing Tank I decided to remove the gasket all together, because it didn’t provide access anyway, due to the Flop-Tube.

However on the Right Wing Tank it does provide access to both the Fuel Sender and the Fuel pickup line. I’ll try it a second time, but if it keeps leaking I’ll remove the gasket and use Tank Sealant.

BUT WAIT . . . Oh snap!

There is actually a “real” leak on the outboard rib leading edge. It took some time to surface, but it’s real. This definitely requires some fixing (on the inside).
So let’s remove the water and fix this leak.

Time: 4 Hours, Rivets: 0/0

Time: 6 Hours, Rivets: 10/0