Hello: I'm a new member. I recently purchased a 1983-1986 John Deere 2350 tractor. When the seller demonstrated it, the 3 Pt hITCH WORKED FINE. NOW i CANNOT GET IT TO OPERATE UP OR DOWN. tHE pto DOES WORK (TURNS THE SHAFT) BUT i CAN'T LINE UP THE BUSH HOG TO CONNECT IT . 3 pT hITCH ARMS...