This is something I didn't account for originally. What's happening is the weight isn't distributed on the pole evenly. What this is doing is making it hard for the actuator to move the dish using the entire range available to it.
The solution is going to be to add a 3 - 4 foot pole out of the back of the dish and attach counterweights as needed until things become more balanced. We'll also be adding a mount for the vertical actuator and moving the mount for the horizontal actuator to the right 5 or 6 inches.