I have Hunter I-20's and upon closer look, it seems like i have the same nozzles in all of my heads (whether they are 1/4, 1/2 or full arc). I am assuming this, but to get the same coverage, wouldn't you have a lower volume rated nozzle in a head that rotates a 1/4 arc, than the 1/2 verses the full arcing head? Seems to me the area by the 1/4 arc rotating heads would get 4 times the water than the area with the full arc rotators (that is if they all overlap correctly). I guess i'm assuming that they are all rotating at the same speed. Am i wrong in this thinking?