I spent the last several nights processing all the parts for the vertical stabilizer. This included drilling and dimpling the skin, deburring the ribs and spars and dimpling where required. The main spar double required countersinking so that the rivets will lay flush on the forward side which mates to the fuselage in the future. I used my drill and countersink cage set to .007" below flush to allow for the spar dimple to sit in the hole I created. The vertical stabilizer is now ready for riveting.