Final fitting of the aft fuselage - 8 hours

Very long and frustrating day. I started the day with a little research on how at the tail pieces fit together to make sure all is good. A little head scratching but the F-710 bulkhead sits above F-779 bottom tail skin, which sits on top of F-778 bottom aft skin and the F-773 side skins.

But now the real challenge is having everything line up when clecoing....but it doesn't.
I don't know where to begin. I've clecoed and unclecoed some many times. Its very difficult and extremely frustrating. I managed to get the assembly pretty good, but the F-710 bulkhead is really really tight and rippled which did not sit well with me. Also I cannot fully cleco the F-779 bottom tail skin as the lower J-stiffener is in the way. Here is as far as I got.