There were 5 rivet locations on the left side along the longeron on the top forward skin that we could not buck. Today I riveted these using CR3214-4-4 and -5 cherrymax rivets. I had to drill the holes to #30 before pulling the rivets. It took a bit longer than normal because I wanted to make sure the -4 and -5 rivets were the proper length rivets for the job. Very difficult locations to check, I think I pulled my back.
