I hear the typical ground-fault-style buzzing whenever the connector of a patch cable coming from the Output of my m5 or m9 touches the connector of a patch cable going to a different pedal. I've tested my cables with an ohmmeter as well as replacing them with different cables - the problem persists. I also tried touching different pedals to the outputs of the m5/m13 with the same results. What is going on with the Stompbox modelers that is making this happen? I don't have this problem with any other pedals on my board, and, frankly, it doesn't make sense to me how this is even possible.