Riveting rudder left hand attach strip / bottom rib
07-10 Step 2 has you rivet the aft 8 rivets common to 3 items - skin, bottom rib and attach strip. It never asks you to rivet the one hole aft of the attach strip - common to only the bottom rib and skin.
7-10 Step 3 then has you rivet the bottom ribs together with blind rivets.
This makes it almost impossible to reach the last rivet on that line next to the trailing edge wedge. Some builders have had to drill out the blind rivets or buck the rivet against the opposing one.
Not certain if this is a plans error, but I think in Step 2 it should say to rivet the aft 8 common to the skin / rib / attach strip AND rivet the one common to the skin and rib. All this is done before you rivet the two bottom ribs together.