After work today, I finished riveting the the rib halves, and attached the rear spars to the ribs and skins.  Used the RV-10 elevator bucking bar from Cleveland Tools.  When used as instructed in the plans, it works very nicely.  I found clamping the skin to the work bench at the front of the elevator using the wood to protect the skin was even better.  Otherwise, the elevator would move around and rivets weren't as nice.  Here is a quick time lapse of todays work.