I am new so, I appologize for anything I may describe incorrectly. I have a B2400 HSD that I split. I had a seal on the differential leaking. Extremely large undertaking. I replaced the seal and got the tractor back together. Only one problem to my delight ( I am not a tractor mechanic) I fired the tractor up and the front end loader and the 3 pt. hitch bounces in perfect unison. I turned the valve off for the 3 pt. and the tractor seems to do okay. I certainly want to get the problem fixed. Any help is greatly appreciated.