selective silver plating of surfaces on beryllium copper... what do ya do?

welp, I've got a component that I currently have silver plated. It's a bushing. The bushing is later press fit into another component. Currently we are machining the OD after the outsourced plating process.

I'd like to find a way to plate JUST the ID and not the OD. That would save more than half of the silver, and an operation. Any ideas? Thank you folks.