I finished the skin riveting and installed the lower half hinges for the tabs. I match drilled the trailing edges, but still need to rivet. I'm at P9S9.
It takes a LOT of rivets. I've concluded that it is less time consuming and provides a better product to just quickly match drill every hole vice fussing with the pop rivets to get them into a hole. The material removed is very minimal and it makes riveting much easier and quicker.
I also devised a small fix to dropping the pop rivet wedge; I put a little piece of masking tape on the backside of it. It works like a champ.