When you place a pylon In the docs it shows a sphere volume but when I place one in UDK it’s a cube volume how do I make it a sphere 
Have used pylons many many times, never knew there was a sphere. Maybe its related to the expansion volumes (press F4 to get pylon properties) or most likely the documentation is out of date.
No idea why you’d need to change from cube to sphere. If you could explain that might help?