Trimmed the v-stab skin slightly to prevent touching H-stab. Positioned V-stab and bolted into place. Riveted V-stab to H-stab. Before adding V-stab front-skin, I vacummed as best I could from the tail. Riveted V-stab front skin. Riveted V-stab spar. Positioned and drilled the V-stab gussetts, but did not have time to prep and rivet.