Question
My designer mentioned to put rainbird nozzles in hunter prosprays.  How do I change the nozzles?

Answer
Its very easy.  With the water off, gently pull up on the existing nozzle, lifting the stem.  THis is spring loaded, so you have to hold onto it.  Then unscrew the old nozzle, and replace it with the new one.  Make sure that the little plastic screen is inside the stem.