Disappointing answers. He seems a bit pissed off.
Time, that the puzzle will be revealed.
By the way:
At the moment there is a ‘balance gap’ between the left side of the copperwall and the right side (the right balance is always important in life). The right side has 869 characters (with the spaces and the extra ‘L’) but the left side has 870 characters (with XLAYERTWO). That´s one too much on the left side! The puzzle has definitely 869 letters all in all (therefore the extra ‘L’ on the right side; for the right balance).
Why is there a ‘X’ in K3? This makes no sense at all. The X has to be removed (see end of K2 with one ‘X’ too little = wrong plaintext). The ‘X’ in the text is significant! We cannot ignore this!
Seems, that K4 is just part of K3 (the apex of the pyramide) and that K3 (layer two) is still not finished. Did he inserted a ‘CANDLE’ or a ‘C’ AND ‘LE’? Or is the CANDLE K4 that has to be inserted into K3 after it has been deciphered? Maybe the last two letters of K2 (‘WO’) will be the beginning of K3 (layer two)?
Many questions, no answers so far 
FS