Any and all HD dealerships have the ability to work on and order parts for our bikes. But pretty much all HD, with the exception of a few, dealers are assholes and won't do **** for any Bueller unless it was a Buell dealership at one point in time too.
I went into the local HD asked to order a key with the PN in hand. They told me they'll never be able to order that and they can't even find that PN I gave them. Showed them my PDF part's list. They said I must've made it up. Called the closest HD/Buell dealer (90 mins away) they said since Buell is owned by HD there shouldn't be a problem but most HD dealers are stupid like that.
But at any rate, worry not my friend as the part's become less and less avalibly someone will start making them. and as far as working on them... Get a shop manual and tear that bike apart!