Today, I installed tank rivets (RV-6403) dipped in proseal to attach the upper tank skin to the four stringers. Then, I removed everything off the table, cleaned up, and slid the wing rib assembly back on to the table. I then put the bottom tank/wing skin in place, and cleco'd it to the bottom of the ribs. Tomorrow, I'll begin to match drill the bottom tank/wing skin to the rib assembly.
