I had the dealer install 3rd function specifically for the purpose of adding a grapple. I also had them add fourth and fifth remotes to the rear. When the tractor came back from the dealer, the third function button was correctly added on the joystick, but the valve had been added to the rear of the tractor. I called the dealer who informed me that I just need to run some long hoses to the front end loader to run the grapple. He said that on my particular tractor which is a 2018 4066R cab and which has the new H440 loader, JD doesn’t made a mid-mount 3rd function valve. This just doesn’t make sense to me. And I hate the idea of running long hoses all the way to the front to operate the grapple. I have found numerous aftermarket kits (non-JD) and I have seen somewhere in one forum on here, the hard lines (by JD) that install on the loader arms. Has anyone had this installed at the dealer and or should I be concerned about taking their advice and just running lines all the way to the front? Does anyone know the John Deere part number or kit number that I should be asking for? Thanks in advance for your thoughts and help!