Riveted stiffeners to the underneath side of the right elevator. I was disappointed in the look of several bucked heads following back riveting the stiffeners onto the skin. The -3.5 rivet may have been slightly longer than optimal, but poor technique on my part was the primary reason. A few trusted chapter members examined it told me not to worry about it. The C/S shop heads look great, and any attempt to remove the discrepant rivets will only..................you know the rest.