It took me a while to find all of the spacers, washers, bolts, and nuts to install the ailerons on the wings. I had to place the plans directly on the wing to make sure I installed everything in the correct order. You need about a dozen hands to hold everything but I was finally able to get the right aileron installed. Without the pushrods in place though they just dangle, especially with the steel rods in the leading edge that serve as a counterweights.