After my thin-nosed yoke arrived from Cleaveland, I was able to finish the last two rivets joining the right skin to the bottom rib nearest to the trailing edge. Then my daughter patiently helped me apply ProSeal to the trailing edge and join the skins with pop rivets. After cleaning up the excess ProSeal that squeezed out around the trailing edge and clecos -- a tedious and time-consuming task -- I re-installed the spar and counter-balance rib with clecos to increase the rigidity of the rudder assembly. At this point, the trailing edge was surpisingly straight, but I decided to clamp it to an aluminum straight edge to ensure that it remains straight while the ProSeal dries. Then I pushed the workbench into the corner of the garage to let it sit undisturbed for the next two days, after which I can begin riveting the trailing edge.