Steering Play When Steering to the Left

[Nasukau]

Hi All,
I had installed a F100 steering box from Randy Gross a few months back into my Father's 1931 Pickup. When I am driving there is quite a bit of play when turning the steering wheel to the left mainly noticable when there are left hand curves in the road. I do not think the issue is with the steering box. When parked and front wheels are lifted off the ground the steering reacts as expected from one side to another. When parked and front wheels are on the ground then the play while turning to the left is noticable. The frontend has new king pins, bushings, and bearings. I have checked and tightend the tie rod ends and drag link ends which both have all new components. The pitman bolt is tight. Is this a ball out of round/worn issue on one of the spindles or pitman arm? I do not recall any major wearing or egg shaped balls when putting the frontend together. But it is possible I missed it. I am not sure what else to check. I did not drive the truck with the original steering box so I am not sure if the same issue were occuring before all the new parts were installed.

Thanks,
Denny