I have a lady whose system was installed using Hunter PS heads. It has been extremely hot and dry here and you can tell exactly where the heads are not spraying head to head. I adjusted them some today but I have a question for someone more familiar with these heads. The heads in the center of the lawn were turned down considerably so I opened these on up and they seem to be spraying head to head now. The heads along the curb and edge of the lawn are closed down to spray the 180 but when doing this do not reach the heads out in the center of the yard. If you open them on up they will hit the center heads but are also spraying a 360. Is there a way to flow more water on the 180's without opening them up to a 360? You can adjust them to spray a 360 with not much flow or open them up for what looks like twice as much flow while still making a 360. These look like a good idea but are a nightmare to adjust! Never messed with these heads before though.