So when I start to prime the drive knob on my VT Bass pedal, I get a pretty noticeable buzz when my hands aren't on the strings. I've never had this problem before and adding the VT is the only thing I've changed in my setup recently. Is this a problem? Or maybe could this be a grounding issue in my bass that the VT is just bringing out? Or is that just life and I'm just being a n00b and should just suck it up!? Could somebody set me straight, please. 

