I removed the clecoed in place covering on the left wing and inspected the work underneath. I found a few obviously defective rivets, and a few that I need to put a rivet gage on. I also found a small crack in a dimple for the wingtip screws. I'm glad I did this inspection, but I'm a little worried I may not like what I find in the other wing once I borescope it. I'm worried I may have to do a lot of drilling!