Changes to the Brewzilla that i can apply to my 3V


Hi all,
I noticed bits about the changes made to the Brewzilla to improve it over all. Some i have done to my 3V. Like adding more vent holes on the bottom and upgraded cord.
I hear that the zilla has insulation added to the element area. Has anyone got a zilla and opened it up. Is there insulation? and how/where is it placed in the unit? And what kind/type is it? Toying with the idea of placing some insulation up by the elements in my unit to help keep the heat up where it belongs and away from circuit board.