that is a very complex not gate, try this.

X=Nothing
M=metl
PT=PTCT
P=PCSN
B=BTRY
I=INSL

MMMM
IIIIIIIIIM
BPXPNXPPPPPP

that'll do it.

The PTCT is too hot for to long. Try removing any brick touching the PTCT. (surrounding layer)

Remove all of the brick around the PTCT and it works much faster

leave it alone for faster fooling.. I mean cooling

That is what I said/ typed...
@dnerd
insulator is not necessary, only the removal of brick.

It burns!!!

Well as you know I am a vampire
*sucking blood*