I plan starting up a small haying operation at some point in the near future. I have a lot of sentimental value tied to a 4230 and know for the most part is is a good tractor. It will be the primary tractor in the operation until I add some smaller utility tractors. I plan on starting with just small square bales, and the 4230 should be plenty in that aspect. Is there anything I should look for in the years these were made? Any major changes? The models I am most interested in are quad ranges with sound guard cabs. The one I remember was difficult to start, but once it was running, it was fine. Any advice is welcomed!