Today I seemed to take a long time to achieve not much. Installed the aileron control bellcrank but I'm not happy that it required 3 washers to prevent the nut becoming thread-bound which in turn allowed the nut to only just be in safety (one thread minimum protruding from the nut). I'll rob a thin series washer from the finishing kit to replace one of the standard washers which will improve the fit. Checked the torque of the factory installed nuts & bolts at the root end of the main spar & applied torque seal to them. Completed the installation of the #1 rib using the doubler plate that the factory supplied to span the undrilled hole in the spar.