With those PITA bulkheads and skin fitted, I was able to make some progress getting the tailwheel mount drilled and fitted to the F-775/711/712 assembly. I marked and pilot-drilled to #30 the holes that attach the mount’s forward flange to the F-711 bulkhead. These are the holes I had inadvertently riveted on the -711, and subsequently had to drill out. They’ll get enlarged to accommodate AN3 bolts before the tailcone goes together permanently.

I also marked pilot holes in the tailwheel mount’s aft flange for two “keeper” rivets that will hold the mount in place until the mount, bulkhead and VS rear spar are drilled in assembly. Sorry, no pictures of this one.