Trimmed the aluminum on the horizontal stabilizer per the plans and drawings. Mounted the stabilizer on the fuselage with c-clamps. Measured and leveled the fuselage and tail per the manual. Drilled and reamed holes for NAS bolts and bolted the stabilizer to the fuselage. I probably spent too much time measuring and re-measuring the tail to make sure it straight and level, but at least I can be confident it is correct.