Finished riveting the skin to the Vertical Stabelizer. All flush rivets. Used the rivet gun on the more central rivets and the squeezer on the edge rivets. A few minor indentations in the Stabelizer skin. Began working on the rudder skins again. The bottom rib has a tight location for a rivet in the aft portion. The directions call for an AD3-3 however I cannot place a bucking bar or squeezer in that location. Have some questions into to VAF and Van's to see if using a blind rivet is ok.