The problem rivet connects the E-901 skin, E-913 Counterweight Skin, E-902 Spar, and E-903 Rib together. After drilling out my first unsatisfactory rivet (which I now realize I should have left in place), the dimple on the inside E-903 rib was distorted. I then decided to drill a size up (#30) to insert an AN426AD-4 rivet in hopes of removing part of the damaged dimple. I then riveted the AN426AD-4 rivet in place, and the above picture is what I found.
There is a relatively sizable crack extending from the top of the dimple outward (can be seen in the mirror). My question is what should I do next? Unfortunately there isn't space to add another hole in this location. I'm afraid an order of replacement parts may be in my near future.
Thanks for your help.
Ethan