Riveted HS-602 spar channels to HS-810 and 814 angles. Fluted and straightened ribs and flanges on HS-404, 405, 606, 607, and 608s. Drilled out forward tooling holes and centered, clamped and drilled on the rear spar the HS-606's. Located clamped and drilled the HS-405's and 608's to rear spar.
