69 Chevy C20 Steering Question

[Marksurfer]

I've read some different past threads trying to figure out my issue. Just finished up a restoration or my restoration guy did on 69 C20. i didn't not change out or make any mods, just all new steering components (tie rods, ball joints, etc.) Also upgraded to a new quick ratio steering box. Had a full alignment done also. It drives nice and straight, but seems finicky. It seems to pull quickly with to L or R with slightest movement. doesn't have the smooth rack/pinion feel. it has the original steering wheel and shaft, but everything else is new.
Any ideas or suggestions?