I started filling rivets today. I did the top of the elevator and horizontal stab. in about one hour. I also started on installing two rivnuts on the firewall to support the electrical regulator which is on the inside of the firewall. The two 6 mm rivnuts holes were not drilled during manufacture. I need a 9 mm Christmas tree drill, which I do not have, so the holes will have to wait until my next visit to the hardware store.