Manual steering box worn out or can be adjusted?

I can testify on the boxes coming loose from the frame. On my 71-duster hard right steer on excelleration and left on decell. box was loose on frame mounting. Further inspection found steering column hub under the steering wheel was finger tight! Yup the previous builder needs to be shot. So now checking everything and ultimately the S box was worn with the top adjuster nearly through the lock nut.