A value actuator assembly for an engine includes a movable engine valve a movable spool valve and dual feedback channels with flow regulated by a pair of orifices. The valve actuator assembly also includes a driving channel interconnecting the spool valve and the engine valve. The feedback channels interconnecting the engine valve and the spool valve. First and second feedback channels communicate between the second and third fluid chambers and fourth and fifth fluid chambers of the spool valve. Orifices restrict fluid flow through the feedback channels as needed to actuate the spool valve and thereby improve valve controllability.