hi Rene, is this a CH car or an import from UK? Maybe that's why you're not going straight to the dealer? If from UK i would think any trusted garage could help with brakes. As your ownership develops though you'll need to find a Morgan expert - there are a lot of tricks to these beasts. The UK dealers (i imported from Brands Hatch) know their way around all the eccentricities.
Greetings from Wollerau!