There is a service kit for that ball stud. If the box and idler are tight then that is most likely what needs to be replaced. The info is on the original thread.
My computer took another dive the other night and it will be a while before I can find it.
Is it better/easier to remove the steering wheel and brake pedal off the shaft? For wire repairs under Dash?
I found some NOS to rebuild both sides of the Control Valve. Need to find and buy the sleeve, that's next, thanks!
Reading my CD Rom of the parts illustration/identification, it's listed as: 3A754A (Typical). Full number is B5AZ 3A754, under Ford Car Parts Section 36, the 56 year is not listed, just 53/55.
Could the car part be mixed with the 57? Ordered both today for tear down/repair near future.