Now the DG606 doesn’t want to shut off at all now. I’ve adjusted the carbon brush and slip ring, and I looked at all of the connectors, and I looked at everything a couple times over, any ideas? The little pilot light above the knob flickers, and is it normal for the little indicator light to flicker? When I got the DG606 to shut off the first couple of times, the pilot light didn’t flicker, and since it’s not shutting off properly, the indicator light now flickers