1982 Jeep CJ7 Steering Drift

I have had steerring issues since owning this C-J. When driving it is almost impossible to hold a straight line in the road. There is no return to center with the steering wheel, if I turn left and let go, the wheel will stay left. I have had the steering box replaced and steering shaft replaced. This helped almost none. It is borderline dangerous to drive, hope someone can help.