Broke the exhaust stud then the extractor what now?

I to fall into this catagory to!

What I did was pull the head off and took it in and we had to drill it over size and now I have a oversize stud in the haed and the right size on the manifold side.

To top it off it was the last stud on the drivers side into the water jacket but no leaks at all and this was done at least 7 years ago.