Prepped and started installing the bottom skins. It's almost done. I have a few more rivets to install and it will be done. The biggest surprise was a mistake I made while dimpling the bigger skin. I misfired the dimpler and punched a hole on the skin. I consulted with other builders and they all said I can flatten it. As long as I have two good rivets next to it, I should be good. While clecoing the skin to the frame, I found that the first rib would not align well (the only one). I checked the bench and jib and everything was leveled. Since everything else aligned perfectly and the rib was not off by much, I decided to match drill rib #1 to the skin. I also found one hole on the skin and the rear spar was not matched by a lot. I sent a message to Sling and asked if I should drill a new how for that.