The Tyvek tape I used as seam protection isn't adhering to the FRP very well due to the bumpy texture of the surface. I will have to resort to a metal flashing and adhesive setup in order to keep water from intruding into the bed.
Looking at refining the aero cap some more by dropping the front vertical supports down a little so that the shape will be more in line with the cab instead of sticking up at the front corners. This will mean I will have to take the sides off so I can make that happen.