Looking at a 4440 powershift with a 720 loader with joystick. I'm not sure of the year, but it's not an 82. Tractor shows 3000 hours, likely 13,000 my guess. The loader is in good shape. The tractor seems in good mechanical shape. Has been kept up. It has spread axle JD hub duals, Extra wide axles, JD quik hitch, Heavy cast centers. Negatives are no front or wheel weights, and of course the hours. Owner is unaware of any engine or transmission overhauls. How worried should I be about the hours even though the motor and powershift seem good? And what kind of value would you put on this tractor and loader?