Install the missing LP rivets common to the nose rib/aileron counterbalance on the r/h aileron. These are pretty much the first rivets you're supposed to install when you build the ailerons. They are a pain to get to on a completed unit due to no clearance to get a pop rivet tool in there. Was able to pull the rivets at an angle by bending the mandrel and then sliding it through a couple of small pieces of rudder trailing edge wedge stacked up. This allowed me to pull with the gun at about a 40 degree angle while still having the rivet set properly. Had to remove the hinge brackets to give myself any chance of success at this, and I don't have any torque putty, so I haven't put them back together yet. I'll do that in a day or two.