I own an 8N which I have had for about 25 years. Just recently my steering wheel started to squeek when turning. Then a couple of days ago it all but locked up. It sounds like a lubrication problem, but I have no idea where what or when. I down-loaded "50 tips for Ford N owners" by Bruce Haynes but his maintanence suggestions for the steering wheel made no sense to my non-mechanical brain. Any suggestions on what is wrong and how to fix it?