I installed the 3rd remote and control valve on my cab model 3240. It took me a good 8 hrs to do. I would give it a 7 or 8 on the difficulty scale with at 10 being most difficult. Had to take the operators seat out and also had to remove the right rear tire to get access to the valve location. If you have the time, tools and confidence I'd give it a go. I learned a lot about my tractor in the process.