Not sure on the horn rebuild. There is no spring under the steering wheel. You can,t leave the nut holding the steering wheel loose. If the mast is too long you loosen the clamp on the steering box in the engine compartment and slide it up or down. Is there play in the actual column. There should not be. That's the thrust adjustment big nut on the bottom of the steering box. Actualy the nut is a lock nut the center turns to adjust the play in the column. Do you have the rubber oring on the aluminum part under the wheel?
