1800 power steering issue

[oliver nick]

i have an 1800c with the saginaw motor. It waslocked up, took it apart, cleaned it, reinstalled. With the front end lifted, when i turn just enough to shift the spool the front end keeps steering until i turn back to neutral. With the font end down, the front end only moves slightly to the right and left before stopping. I can turn the steering wheel in circles all day.

Any suggestions? it seems like the oil is running right past the metering vanes. Also the blocking valve was pretty stuck when i cleaned it, could it be stuck open now.