Td4 steering felt rough, it used to be smooth before, after changing drive pulley, steering feels stiff feels though rubbing against something. Any bits in the power steering mechanism need changed or the damper pulley itself to blame drive belt tension etc seems ok. No rattle sound from engine after changing Drive pulley. How the power steering oil works do not know. Anyone got any idea for the stiffness of steering and what to check if there any. Thanks a lot.