I just received my new Acurus A200x5 and Silvercat interconnects. When I hook up the interconnects to the pre-outs on my Integra 7.1 A/V Receiver, the metal jacks touch. I haven't powered up yet and I am afraid to like this. Is this a problem or no big deal since they are only pre-outs? I don't want to blow my receiver or new amp!?!?!