I have 7 or so pedals hooked up to a, by now, old 1-Spot adapter. It's been working great, but lately I have noticed that sometimes there is a pop when I switch between pedals. It doesn't happen all the time, just now and then. Do you think I'm overpowering the unit or perhaps I wore it out? I know I will need to sit down and trouble shoot in more detail, by taking out pedals and checking patch cables and such, but still I thought I would see if anyone else has experienced something like this.