I've got an email from Eddy:
"Hi!
I understand there is a thread on xsys forums.
We dont have any standoffs prepared for the current cards.
I am sure there is no need for your blocks the standoffs.
Some other cards dont have such optimal mounting holes positions and it
bends the card more.
Eddy"
I know it's hard to make some stand offs and send them to all the people who bought FC blocks from EK, but my cards are already warped, and i didn't tighten the screws hard... so ...
I will come back with pictures