I need someone to give me some instruction on how to "detail strip" a Unity Spotlight. I cannot for the life of me figure it out. I can take the head off, I can remove the handle, and even pull the unit from a car, but I cannot figure out how you remove the shaft from the head! Is this not possible? I've removed every screw and pin I can find, and this thing will not separate. It looks as if it is supposed to, but I have had no success.