I completed the aft bulkhead this afternoon without too many problems. No rivets had to be drilled out for a change! It's a bit scuffed up, but I'm working on learning how to work the aluminum without scratching it and making an unpretty part. This is the front side, looking at it upside down.
And here is a sideways view. Lots & lots of hand squeezed rivets! It took a few minutes of head scratching to figure out how to get to the 270's right next to the ears, but I finally had the inspiration to put the squeezer head through the counterweight access hole and after that it was a piece of cake.
Next step is to detour to the making of the cradle in which to build up the tail cone.