No prosealing today, just working on miscellaneous tank stuff including roughing up the rib flanges in preparation for proseal, and fabricating this little trap door for the left tank with the flop tube. I'm think the trap door only does anything if you do some weird stuff like putting the plane in a 90 degree bank and holding it there for a bit... It'd prevent the inboard section from draining of fuel quickly and starving the flop tube. I don't really intend on doing any 'sideways G' maneuvers, but who knows and the plans have it, so here it is...
