Riveted the following parts together: Part 10 to Part 10R and Part 10S Part 2 to Part 2S and Part 2R Part 11 to Part F11A and Part F11B Part 1 to Part 1A and Part F1B Rivet the two pieces of Part 13 together Recheck the fit of the entire assembly. Drill the platenut holes (#19) for Part F11A, F11B and Part 10, counter sink the rivet holes for the platenuts.