I have the DG-76 and having a hell of a time getting an IO shield to fit into the opening.
I had to take pliers and bend out every other tiny tab that line one of the long sides.
They were just a hair longer then the others and kept the shield from fitting in.
Any one else or just me?
I also cut out part of the divider plate to make room for the power plug and SATA connectors.
This way I can put a X99 Classified MB in there, it is EATX and the case is ATX.
Grinder and cutoff wheel made a nice straight cut.
Used automotive door guard to cover the cut edge to protect any cables.
EDIT
It is the D76, not the 77. I have the 77 and that is my next build.
Going to put a x99 FTW in it.
Life is too short to carry a cheap pocket knife