There are two people who reflock presentation cases that I know of. One is our own Hammerdown (Kurt) and the other is Joe Cebull.
I should say that Kurt used to restore cases. I'm assuming he still will but you might have to talk him into it..
I've had Kurt redo one of mine and his work was excellent. I've never tried Joe but he has a great reputation.
You can contact Kurt (Hammerdown) on this forum by using the Private Messaging system. You should be able to Google Joe Cebull and find a contact email or something.
By the way, I quit worrying about presentation cases a while back as they just don't seem to be worth the trouble, to me anyway. They're nice enough after restoration, but the money difference between gun-only and gun with case just doesn't add up if you include the cost to restore the case. Plus, once you get a half-dozen or more cases, it starts to take up a lot of room if you keep them in your safe. JMHO, of course...