LOL..The correct police will get you big time for calling the POWER DIRECTOR -- a "ta". They are not the same. The Power Director is basically a two speed wet clutch you can slip into the center area (not a true neutral so don't true to use it as such) to start or keep the PTO running, while stopping travel without using the foot clutch or taking it out of gear. If you don't have manuals for your tractor get the AC Service Manual and Operator's Manuals for it. There are some linkage adjustments as well as an internal shim adjustment procedure for the Power Directors. You should be checking it out before you have bigger problems with it. The external adjustment might cure it.
You can use the on line parts books at https://apb.agcocorp.com/login.aspx?region=NorthAmerica
. Use the Guest User button to access the parts catalogs. There is another button in that same place that will take you to the AGCO publications site.