Sorry, I may have read your post too quickly. You were not looking for advice since you already sent the watch in.

But to answer your question: I have never had an Air King but I once had another Rolex watch with a Twinlock crown. No problems whatsoever, neither with any of the Triplock crowns.

As Martin said, Rolex crowns are usually a bit harder to move than Jaeger-LeCoultre´s or Patek Philippe´s.

If your dealer decided to give it back to Rolex you can expect it to return in brand-new condition.

Enjoy your watch and wear it in good health!
Nico