After the all the skins were riveted on, I rolled the fuselage right side up and set it at a convenient working height on a pair of sawhorses. Then I leveled the fuselage at the center section, both lengthwise, along the longerons, and sideways, across the longerons and secured the fuselage so that it stayed that way.
Referring to DWG 26 I clamped the F-714 aft deck to the longerons, using clamps through the forward lightening holes and rear rectangular opening. I placed a level across the rear deck, near F-710. I loosened the clamps and twisted the fuselage slightly until it read level.
I took my time with this step as once the aft deck is riveted to the longerons, the fuselage is torsionally rigid, and any twist built into it would be there forever.
When the fuselage was straight, I re-clamped the aft deck and drilled it to the longerons.
After deburring and priming I riveted the aft deck to the fuselage.
Time: 4 hours.
Leonard's RV-7A Build 