I had a 3700 and it was a nice machine and worked very well. The only thing I noticed was that the pressures on the loader were low so I adjusted them to the higher side of the factory recommended range and it gave the load a nice boost in lift. You do need weight on the rear but the machine itself is very nice. I sold mine and got a MX5100 due to the much wider stance (I'm in WV where everything is on a hill) and it has a more powerful lift. I found I had several things in the 1500+ pound range I was moving so a bigger tractor was in order. There was NOTHING wrong with the 3700, it was just a little smaller than I wanted. I did skid logs with it and NEVER had any problems even on our steep hills.
CASE245 you keep posting these issues but did nothing to try and correct them? I also own a Farmall Cub the won't run right now, I am not off putting message after message up bashing the Farmall's. It is not the Farmall's fault the motor is not back together after the rebuild and the distributor is laying on my work bench. Nor is it the fault of Kubota or any other manufacture that you won't load the tires, use counter weight or by a machine that fits your needs better. There are a LOT of good makes out there, in several colors, find the one that will work for you and buy and enjoy it......