Sealed the rivet heads on both tanks. Subscribed to the "proseal is cheap" philosophy and worked hard to be sure there was a good bond between the aluminum and the proseal.
Wet installed the left #7 (outer) rib. The rivet squeezer sure does a better job than a gun and bucking bar .. and alot quieter too! Installed the tip stiffener and sealed the shop and mfg rivet heads.