The Proseal squeezed out in each hole and around the stiffeners pretty well and I think it is sealed. I riveted on the rivets with the Proseal still on them which made it kind of hard to tell if I had the right amount of squash. So I used the tool to measure. I put the vertical flange fowards on all the stiffeners because the drawing note said it is an option to make Prosealing easier. I put two with flange reward to clear the capacitance sending plates. I don't know what is any easier about having the flange forward. The flange blocks the view of the forward edge.
