Finished a bit of the allowed "final" riveting and moved to fitting the turtle deck frame. It didn't fit or wasn't shaped the way I thought it should be (OCD kicked in - again!) and I spent quite a bit of time making it just so. Also, decided to rivet it to the skin (per the instructions) but also try to rivet it from behind; through the bulkhead it rests against. Was able to get it clecoed in place and a coat of primer on it. Tomorrow will tell if it is possible to get a rivet puller in place well enough to get the job finalized.
