Back from ~ three weeks vacationing in Italy & needed to re-group my plan of attack as to how I would complete the fuel tank rib insertion. Since this was my first time working with ProSeal, I researched the dos & don'ts as how best to proceed.
ProSeal is everything you've read about; messy, but it works.
After five hours of working I found of convenient stopping point & will fully seal the rib in the next day or two.