SilverSportAWD

Hey guys/gals I have a 2010 Ford Fusion Sport with 108k on the clock and getting some harsh shifting. I have googled it to death and not finding exactly what may be wrong. When already moving, poke the go pedal and the downshift is fairly harsh. upshifts are perfectly fine. I am also getting the dreaded low-speed vibration in the rear axle... Just found out about the fluid swap in the read PDU. FACK!! Thanks in advance.