In the final fitting of the HS fairings, I felt like they weren't pulling tight to the skin and was worried that the countersinking had weakened the fiberglass. So I went ahead and epoxied some aluminum strips on the inside similar to the fairing.
High build primer, sand, glazing putty over the pin holes, sand, prime, repeat. Then riveted in place. These are done for now. I will shoot a final coat of primer to seal them.