Final riveting on the rollbar. Closed up the rollbar with blind rivets. Added four nutplates to the aft side for unforeseen attachments in the future. Saw one website that a builder placed the ELT antenna there.
Deviated from the specs when I made a mistake and tapped the two screws for the "skin" to 10-32 instead of 8-32. Oh well. Good news - all the fasteners are the same(?).
Made final adjustments to the rollbar to fuselage attach brackets and bolted them on. Need to torque to spec later. Added bolts and nuts per spec ...