I had a little mixed ProSeal left over from the forward skin access panel work, so I finally sealed the aft edge of the rear window/fuselage skin junction. I cleaned the area well, then laid down two tape lines right at the edge of the fuselage skin, with about a 1/8" space of clear plexiglass. Then, using a large medical syringe filled with ProSeal, I squeezed a bead of ProSeal on the center of the exposed plexi at the aluminum skin's edge. Running my finger down that bead line, I squeezed the ProSeal down into the space between the plexi and aluminum while smoothing the bead. I immediately removed the top then bottom tape lines, revealing a beautiful ProSeal edge. Should be water tight now.
