Fabricated F-732E angles. Laid out and drilled F-631E plates. Cut F-732D angle to length and closed angle to 88 degrees. Laid out, drilled, and deburred all holes called for at this stage of assembly in all 6 angles. I left the holes in the vertical legs of the F-631C at #30 and will drill them to 3/16 in assembly with the canopy frame. I did NOT lay out or drill the holes in the vertical legs of the F-631D angles.