Power Steering box turns hard left when steering wheel released - yikes!

Thanks to both for the feedback.
I'll do a bit more tweaking this week, but will likely return with a question or two regarding re-centering.

Re-centering what?
The valve housing is held in a fixed location by the two mounting bolts
The shaft that slides horizontally within the valve housing does move back-n-forth. I think you mean this needs to be centered???? That would make sense.

More soon.
Thanks again.

Craig

Photo of the proud owner below.
I'm just the wrench / project manager.....................