Received two HG10-980's today and attempted to install them with H55 coolers. However, I am hesitant to proceed due to a potential issue with the standoff screws: It became immediately apparent after securing the pump/bracket thumbscrews that the PCB had become deformed to a significant degree. In fact, as soon as any pressure is applied to the pump the board will start to bend around the GPU.
I believe the standoff screws included with these HG10's are simply too short. What's more is that the diagram of the screw in the user manual would appear different and longer as well.
Having been waiting on these cooling brackets for a very long time it's even more frustrating to run into technical problems now.