Hi.
Last December you already asked about this and got some correct answers.
Why don't you pick up that thread and go on over there ?
Did you actually do anything with the information over there ?
You should have been able to control those actuators by now, three full months should be enough to know how to read a potentiometer and to find out how to use that information to your actuator(s).
Hardest thing is to provide enough current.