Bolted the vertical stabilizer into position, checked the measurements again, then match drilled #30 into the vertical stabilizer rear spar the two 1/8 holes in the F812B-1 angle / control stop. Final drilled the holes #12 Ran a string from a steel ruler on both sides of the vertical stabilizer to the front center of the aircraft and aligned the vertical stabilizer. checked and adjusted the vertical stabilizer for straight along the vertical Stabilizer rear spar. Clamped the vertical stabilizer into position and drilled the VS-702 front spar, F-885 spacer and F-884 attach plate Final drilled #12 the four bolt holes for attaching the F-884 attach plate to the horizontal stabilizer front spar
