You are right, it shouldn't take a pull or push to get it going. Mine extens and retracts just by pushing the button. Mine however is not perfect. I have to guide the front arm into its resting position when retracting. I have a remote control so it is easy for me to stand there with the control and give it a little push sideways to get it to the right spot.
1997 U320 Foretravel 40ft
Ron & Donna