carsondoc - did you ask me why I broke up the red bottom base into 3 pieces? (my memory is failing way too quickly). The reinforcing fiberglass tape wasn't even and I was concerned that if I simply overlapped two pieces on top of the tape seam that they would not seal properly. So, I spanned both sides of the tape with a single piece of covering first. Then I covered from this center strip to the tips. The adhesion between two pieces of covering is much stronger than between the covering and construction material.

hth,