I play thru an SVT and a 6x10 Ampeg cab. The head fits nicely on top of the cab in the notches but I'm getting a rattle or buzz in the head from the cab output. You can only hear it at low volumes but it's still annoying. I've heard it's good to run the head separate from the cab to avoid vibrations jarring something loose inside the head but I never see anyone actually doing it out live. Do you all setup with your heads separate from the cab? Is there anything I can do to eliminate the noise without separating the two?