RV-8 Build. Ep 046. Wings 08 - That Hippie Pilot In this installment I give a better explanation of the mistake I made on the rear spar doublers, give you a look at how squeezed rivets can end up "tipped", and drill wiring and plumbing holes in all of the ribs. I thought it was going to be a short day of shop cleanup, but it turned into a very productive 4-5 hours of building.