Why did Deere engineers find it necessary to have the steering different between the older 200 series Vs the 140/300 series? Which steers better AND easer? What parts - if any - are interchangeable? Roth steering box, Axle? Can I change my 140 steering to a 200 series steering? 🤔 I'm sure the 200 series steering is cheaper, but is the relatively complicated 140 that much better?