I'm getting an evenly spaced dry spot at the mid-points between rotors. The area being irrigated is 70' x 35'. The rotors are PGP's with #6 & #3 blue nozzles and spray head to head. This is two zones piggybacked at the controller to run together. I seemed to get the best control and have minimal radius adjustment to do running them together. Do I need to split this back into two zones to get uniform distribution?