Riveting the Fuselage Together - the order of things

[macrafic]

I'm at the point, just before "flipping the canoe", where the side skins get riveted on. After that, you are instructed to finish riveting on the bottom forward skin. I have a couple of questions (RV-7A).

First "...finish riveting the bottom skin". That implies that the riveting has been started. Mine hasn't and I can't see anything in the previous pages that indicate I should have started. What did I miss?

Second, nowhere can I find where you rivet the bottom skins where the mid fuselage overlaps the reard fuselage, and the 623 corner ribs. Again, what did I miss? Do I do it now, or is this waiting until later for some reason.

As always, grateful for the resources out there who have forged this path before me!!!!