It is indeed. I installed doubled bulkheads back there in 2016, after learning about this. Here the fuselage is shown upside down still in the jig.

nIDo8wf.jpg


It wasn't easy. I needed to rebend the flanges to get the skins to fair smoothly and add some shims. Eventually it all fit, though.

As far as I know, this is the first time this issue has gotten publicized, and your photos are excellent.

Dave
 
I sent the pics to Vans. Hopefully they can suggest a fix. Doubling up the bulkheads at this point would be challenging.