Spent the majority of the day updrilling, Clecoing and then taking apart and deburring the left side of the aft fuselage. I had problems with F22-05L which I bent the wrong way. Spent some considerable time fixing that mistake.Finally made the connection and carefully looked at plans and placed the correct amount and number of rivets in the places they belong. I also started marking the spots in bulkhead 2 and 3 where there needs to be a 1/2 hole #2 and an area expanded #3.