Flathead Starter Rebuilder in Bay Area

The starter on my 51 F-1 ****ped out on me (6 volts, 226 inline 6 flaathead). From my examination, it looks to be the starter motor itself as the drive gear looks fine... so does anyone know of a good starter rebuilder in the Bay Area? I'm in San Francisco. Thank you for any advice.

 

I like:

http://www.buchananautoelectric.com/

They are in Oakland, just over the bridge from you.

 

Thanks gimpy, I appreciate the recommendation and will give them a call.