Im finally close to finishing mine. I saw a video where greg was grounding the xlr's on the back. But those xlr's were not soldered to the small green circuit board. They were just drilled into the back of the case. For those of us who have the newer design, do we have to run any wires from the ch1 and ch2 circuit board to ground the xlr's? or are they already "grounded" being soldered on to the circuit board? ... anyone know?