Leveled horizontal stab on the fuselage. Added .038" shim to forward L side under F-810E spacer. Drilled #30 holes from stab attach bars to HS rear spar and clecoed in place. Squared HS. 101" from rear corner to aft outboard corner of L & R canopy rails. Drilled, deburred and installed bolts on front edge of HS-814-1 splice angle. Drilled, deburred and installed bolts for HS rear spar attach points. Trimmed the bottom 9/16" from VS-702 front VS spar. Clamped and squared VS in place, 62 5/16" from top of VS to aft corner of HS on both sides. Located and drilled bottom 3 bolt holes of VS. Enlarged holes to 1/4", deburred and installed bolts. Drilled, deburred and installed bolts at F-812B-1 control stop locations.