Dimpling and riveting. Impressions thus far, some of the rivets are a little out of proper length. Ended up having to drill out a couple due to bending (Van's sent the wrong rivets, no 4-5s, mislabeled the 4-6s). Back riveting went well. 7-6 step 11, 7-7 step 5 (w/Sean), 7-8 step 1-3, 7-9 step 1-6,8.