Started working on the vertical stabilizer - Ross joined me for the first time, and assisted in all of the below steps.Step 1: Cleco the spar doubler onto the rear spar. Cleco the 3 sets of hinge brackets.Step 2: Drilled the two missing holes into the upper VS-410PP hinge bracket.Step 3: Deburred and fluted all of the ribs (VS-704, 705, 706, 707).Step 4: Attached the ribs, creating the skeleton.