Pin problem

OK, dumb question. I have a pin from Disneyland that I traded for at WDW. It has SLeeping Beauty's castle with four windows and a princess in each window. If you tip the castle on its side, two of hte princesses slide over revealing two more princesses or leading ladies underneath. Proble is the sliding pair have come off track and I don't know how to get in there to fix them without damaging the pin. Anyone have any ideas?

Take it to a good "working jeweller" ie someone who does repairs at the store. I've been using a store in my hometown for about 20 years and they can fix anything.

call disney and ask or when in disney go the town square where the sale pins someone would be glad to help.