Spent the morning working on the F904 bulkhead. Riveted the F904-C uprights to the F904-A and F904-B. Fabricated the control stick mounts. This required match drilling to the F904-B and then cut away excess aluminum to save weight. Bolted these in place and then started assembling the control sticks. Lots of little bolts, nuts and washers that took a while to find the right storage bags. Pulled the control sticks back off and put in storage.