I just purchased a B-stock (open box) GPDI/IR from GC/MF. It sounds great (like really great), but I have experienced some intermittent cutting out (complete loss of signal to cabinet) that seems localized to the Clean/Deliv/Pittbull mini switch. My reason for saying this is that at least a time or two the cutting out occurred when I flipped the switch to a different setting. I’m curious if this has occurred to anyone else and if there any troubleshooting steps you’d recommend (outside of cable experimentation).