[hardtimes]

Originally Posted by Terry Burtz, Calif

Take it to a specialist with a plunge EDM (Electrical Discharge Machining).

One service near you is: http://brokentap.com/services/

Hey Terry,
Thanks much for this great info !
I was talking with Pres of Model A club this morning.
He , a mech engineer, said same as you r input. He said that there is an additional method , similar to the EDM.
I will look into the referrence you gave. Thanks again.