Hello startekselva.
At the beginning I would like to dispel doubts:
Block + backplate was made by SKEEPER, i.e. by me, and here you can see additional photos -
CLICKIn order for me to make a block for your DARK X299 motherboard, I would have to own it, but unfortunately I can't do it
Any one if you have demo board so for testing or benchmark please send the board to Skepper