Just serviced, Now it's making noise?

[Jac]

Hello, I'm new to the forum and learning a lot here. I've got a problem hopefully you all can solve easily.

The watch is a late 70s Date. I just had it in for service and repairs- the bill ended up at $750, but the watch hadn't been serviced in probably 15 years. And the watchmaker who performed the service is Rolex certified/trained.

The new crown is nice (although it's upside down when screwed in) and has a much tighter/more solid twist. The bezel looks nearly brand new, no more rotor wobble and overall I'm really pleased.

However, it sounds like the rotor is scraping when it's moving. It could be metal on metal. I read somewhere here that the new lube has to break in but that sounds somewhat mythological.. Should I be worried and send it back or wait for it to fix itself?