Wrestled the replacement F-710 bulkhead into place around the four J-stringers and riveted it down the sides, saving the bottom for when I have some bucking help. Clamped the F-710B stabilizer attach angle in place and match drilled it to the the bulkhead and longerons. Deburred, scuffed, cleaned and primed the F-710B.
(Edit 9/26/2020: Should have waited to match drill to the longerons in assembly with the Horizontal Stabliizer, because the angle moved back slightly when actually riveted to the bulkhead. However, I think it will be ok, as the angle only moved back about a half hole diameter; I'll just have to be careful to use the existing hole in the longeron rather than the one in the F-710B.)
