Riveting the understructure of the rudder together was a little challenging from the standpoint of reaching all of the rivets with the squeezer. I was able to avoid using any of the optional blind rivets by using the longeron yoke in several places. I wish I had snapped a picture of the completed understructure with the R710 horn brace riveted in place. David, Ashely, and Stevie helped with the riveting - handing me tools and holding parts.