Aft Fuselage Bulkheads

Started the fuselage bulkheads today. Got the aft one completed and deep into the next one. Since the fuselage is roughly cone shaped the bulkheads get bigger the further forward you go. I've decided, after much consideration, to not prime the aft fuselage structure other then those components that aren't alclad coated. The primer debate rages on but plenty of guys aren't priming either and older RVs aren't falling out of the sky. Ask me in 10-20 years if I made the right choice.