The guys at The Early Ford Store in San Dimas recommended Rick's Radiator Shop in Azusa. His website is:
http://hstrial-ricksradiator.homestead.com/index.html
I haven't had any experience with his work but I called him and he gave a reasonable estimate to Rod out my radiator.
The guy at Brassworks told me he will recore radiators. He's in Pro Robles in Central California.
Good luck,
David Serrano