All your sprinklers are pop-ups. I assume that the Rainbirds are sprayers, sometimes called "misters". Regarding these Rainbird misters, in order to lower the arc radius, they must have a plastic filter located just under the nozzle. When you turn the center screw in the nozzle, it pushes down on the filter and reduces the flow. When the filter is missing, the screw just falls through the hole. You should be able to completely shut off the flow that way.
I hate all Hunters and Toros, and always replace them with Rainbird Maxi-paws. I can optimize the Rainbird rotors to deal with high or low water pressure, and adjust the arc and the spray in a matter of seconds.
If you still can't get the sprinklers adjusted with your current water pressure, you can either add more sprinkler heads to your zones or install a pressure reducing valve (PRV).