I have a new Mark V head and I have a question. I turned the amp on a waited about a minute for it to warm up and started playing and I noticed all the channel lights on the footswitch were lit up and the amp started popping and clicking really bad until I selected a channel on the footswitch then it immediately stopped. Then I turned the amp off and did that process again and the exact thing happened. Is this normal for it to click and pop when you turn the amp on and do not select a channel on the footswitch immediately?