Did some work, now steering pulls by itself

Hey everyone, (1967 Dart, 318, Power steering)
I did a little plumbing when replacing my original (cracked) PS pump with a Saginaw off of a '70 small block. There was a problem with the fittings mating up, and I stripped some of them (Grrr!).
So, I pulled the plenum off of the steering gear; a little two bolt jobber - the steering hoses attach to it, and it bolts to the steering gear. Anyway, pulled the piece off, removed the stripped hardware, got some new parts and fabricated a fitting that everything connects to. Sweet!
I bolt the little plenum-thing back on, hook up the hoses, fill the reservoir and fire up the engine.
And, Blam-O! The steering wheel spins the wheels full right, all by themselves. So, I drain the fluid, disconnect the hoses (again), and pull the plenum off. I clean it all up, and re-attach it to the gear, making extra sure that the hardware all lines up (there are three holes, a high press inlet, a return, and a screw surrounded by a spring). Tighten in the bolts, hook everything up, and fire the engine.
Ka-plow! This time the wheels turn hard left! What the deuce am I doing wrong? Its not even turning in the same direction! The wheels were lined up straight both times.
Anyway, if anyone knows how to line this up the correct way, please le tme know.
Thanks!