Energy Field Reshape

[SharSash]

Hi! The title says most of it. So what i want is to make Doodads\Cinematic\EnergyField\EnergyField from the square as it is to a perfect circle shape. Looking for soulutions. I manage to increase Emisson Rate and Speed in War 3ModelEditor to make model more visible. So I want this:

become something like this:

Thanks in advance!