I have a 1984 1310, manual steering with a loader, that is too big for the tractor. Well, the steering box is severely worn and upon inspection there is no lower bearing or bushing for the sector shaft. The shaft rides on the case itself. Is there a way to rebuild the box? A better solution would to go full hydraulic, but the steering valves are very expensive. I am looking for advice and if anybody has solved this situation. Thank you.