I just wanted to tell you, in case I missed someone telling you, or if you already know. My 300 with fast hitch is set up for down pressure. If sitting in the seat my cylinder like most if not all is on the left of the tractor. To go from having down pressure to a floating cylinder there are 2 what I would call toggles or screws located on top of the valve body. Can’t get to them without removing the sheet metal. Like I said on the valve body in front of where the steering wheel is. I believe it’s a 1/4 or 1/2 turn to change. It’s also stamped on the top of the valve body. Wasn’t sure if you knew this or not. Just throwing it out there !