I started off the day by riveting up the forward floor assembly consisting of the mid section floor and the rear footwells. This went pretty quickly and smoothly.
I tried to clean up the primer on the back of the right floor section. The Sherwin Williams rippled again. I used laquer thinner to remove as much as possible. I then switched to rattle can primer, which worked great. I don't know if the skin was contaminated or if the SW primer is incompatible with the spray primer. For now, I am switching back to rattle can.
