Any Saginaw Power Steering Pump Experts?

Hi everyone,

I don't have an A-body, but I do have an e-body that uses the same power steering pump. My pump has developed a knock for the first 10-15 minutes of running. Almost sounds like a lifter tap, but it's not consistent. I took it all apart, blasted it, rebuilt it using the basic kit (seals and shaft bushing).

I didn't find anything wrong internally, or at least what I "think" could be the culprit. I took some measurements with my dial indicator, and I'm trying to verify what is "in spec", and what is "not in spec" and I'm having a hell of a time trying to find people with the background of these that know for sure.

Maybe there's an old school mechanic around here that can shed some light so I can make a decision about what to do next...been in limbo.

Shaft thrust play: .020"
Pulley "wobble": -.010" to + .020", giving .030" total variation.
Pulley offset from crank pulley: .070"

I'd love to make sure I fixed the problem, but I don't want to just start replacing everything "just because".

Thanks for any help you guys!