Can someone recommend a shop to rebuild a Duo-Art Rotary Pump Motor
somewhere in the San Francisco Area?  Mine occasionally stalls when I turn
it on.  If I turn the shaft after I power it on, it works just fine.  New
brushes maybe?  Reblitz mentions something about cleaning the starter switch
contacts for the starter winding.  Anyone know where it is located on the
motor?  I rebuilt the Duo-Art Mechanism itself so I'm pretty handy with
tools or is this better left to an expert?

BTW, This is a 1927 Stroud Upright

Thanks!

 -Ed