Installed four more LH leading edge rib flange - to - spar rivets. Had to drill the end one out. I first ground down the double offset rivet set for better clearance from the aft ribs then I marked the set so I could tell when it was positioned properly with the offset clocked so the rivet gun is farthest from the rib. I put duct tape on the set and gun to hold the set in place without clocking. I used the wood guide for the bucking bar and reached my right hand through one of the lightning holes to hold the bucking bar. I used my left hand to hold the rivet gun, pushing it up against the rivet and outboard so that the aft rib flexed enough so that the set was 90 degrees to the spar. This worked well at first with no smileys for the first three rivets but when I hit them again to buck them a little bit more I got some minor smileys which were within acceptable limits. I then bucked the fourth rivet on the third rib from the IB edge and ended up with a huge smiley that required me to drill out the rivet. After that I decided that setting these rivets is really a two person job so I'll wait for some help.
