Completed all riveting. The C-Arm worked really well for the flush rivets. Once the rivets were placed in the hole it was almost as quick as pulling a rivet stem.
Still need to drill out / replace 4 rivets but have to wait until the kids have been put to bed; Mr Mom / Daddy duty comes first.
Am eager to begin the left spar as I think it will be much easier having already received an education with the right one. Will have to see if I paid attention.