I'm rebuilding the steering box for my used (25+/- year old) Kubota I recently bought. The lower bearing in the steering box is busted, which caused the "ball assembly" that rides on the steering shaft to get damaged. The only things that got damaged are the small pieces of bent sheet metal that recirculate the ball bearings into the ball assembly. These pieces apparently are not available; I'm told I have to buy the complete $150 ball assembly. Has anyone had to deal with this and are these pieces available without buying the whole assembly? Thanks.