Closing of the right tank with special thoughts for the Z-brackets. No to many problems. Sabine gave a hand in clecoing and un-clecoing, helping with the pop rivets and part of the final cleaning.
Here is an explanation for the prosealing of the rear baffle. First a line of sealant on and above the rivet line, then when positionning the rear baffle, it acts like a squeegee and normally forms a fillet on the inside of the tank.



This is a picture of the first fuel bay, and it seems the fillet is here. So at least, this side of the first bay should not leak.