Strange, I was about to bump this myself a few days ago to ask about something. I just picked up and unboxed Arad's VF-31S recently, and the left wingtip doesn't click into place so it droops a little instead. Was this ever a known issue and is there any sort of fix? I saw like one post deep back in the thread from when it was newish from someone who seemed to have the same problem, but not much else.
Anyway, I got it because I just finished convincing myself that based on the timing since the Hayate Revival (and the unfinished Super parts for the original run), Bandai wasn't going to do Revivals of the rest of Delta Flight any time soon. Picked up the last couple I didn't have, and even some extra Super parts to try my hand at customs eventually. And of course, that meant it was even more unlikely that they were going to reissue the 31A any time soon, may as well bite the bullet and grab that too. 34k for a B-grade at Amiami doesn't hurt too bad compared to the reissue price, but still. Anyway, all that to say, now I wouldn't be surprised at all to see all four remaining Revival bundles with supers in the near future. You're welcome, everyone.