Tonight, Jeff and I were able to complete the Wing Rib installation during this session. The first step was to rivet (and Proseal) the Tank Attach Bracket to the Tank Skin as shown below.
Then, rivets the Tank Inboard Rib to the Skin.
And finally, set the six AN470AD4-5 rivets between the Tank Inboard Rib - FWD, Tank Inboard Rib - AFT, and the Tank Attach Bracket. Below are several pictures of the final product.