^ Didn't I end up with a quintuple post awhile back? :-)

Vaderios, nice mockups, as usual. However in pic 1, as AxiaEuxine pointed out, the structure would not be visible behind Vader from that angle (I think it would be off to the left).

As for pic 2... I feel like I'm the only person on the forum who doesn't see any continuity issues with the vane/duel sequence. I always imaged the underbelly of Cloud City to be pretty big, and that the duel could occur anywhere within its bowels. In pic 2, then, is there any reason to believe that that balcony is part of the vane-like structure? Could Luke not have been somehere else (i.e., higher up or below) that structure on the balcony, only to resume the duel in a different physical location?

Edit: sorry, by "pic 1" I meant the 2nd one (the one with the structure behind Vader), and by "pic 2" I meant the last/3rd pic (the long shot of the entire structure in the shaft).