Blind riveted the nose ribs to the pipe. Assembled the aileron and riveted by the instructions. The top rivets that attcah the leading edge and trailing edge skins to the spar were difficult to reach with a bucking bar and required a degree of trial and error before it was done. This included removing several rivets before figuring out the best way to buck good rivets. I deviated slightly from the plans by squirting a quarter sized dab of Permatex Ultra Blue RTV in the junctions of the aileron skin stiffeners prior to closing the aileron. I did this for the elevator stiffeners (as instructed by the instructors at Alexander's Technical Center where I built my tail) to decrease the risk of cracks and fatigue in these areas from vibrasion. I used this RTV because it is corrosion resistant, remains pliable and is good over a very wide temperature range (-65 to 500 degrees F). The completed ailerons were shot on the fuselage crate that arrived in the second week of December.