I recently picked up a new D-Moll and an FS7HE to control the amp. When alternating between channels and engaging the mid-cut with the footswitch, there is a very noticeable discontinuity in the sound while playing. It's not quite a time lag, but definitely not an instantaneous switch and quite distracting. I'm using a standard mono guitar cable from the FS7HE to the amp. Is this normal for this to happen with this setup or is a different cable, such as a TRS necessary for smooth switching? Thanks!