On cold mornings the tractors steering is froze up. Let the tractor run for 15-20 minutes and then it works. Is this a symptom of water in the steering box?
I'd say so. Suck that turkey gravy out of there when it's hot, maybe hose it out with some WD40, and replace with some fresh gear oil and see if it improves. Might have to do it more than once to get it clean.