Step 7: complete frame / electronics deck / servo
You'll need the previous assembly, plus the top and lower deck for this assemble. Use qty 10 .75 4-40 screws + nuts to complete this step.
you'll need qty 4 4-40 nuts to attach the electronics deck to the main frame.
you'll need qty 2 .5 4-40 screws + nuts to attach the servo. - also, attach the servo BEFORE attaching the top deck...