I replaced the capacitor bank and nothing else a month or so ago. The meters were doing this before. And you could smell that old capacitor smell so i replaced them. It solved the meter light fluctuations but now the flickering with audio is back. The hv power meter shows fluctuations following voice pattern. Anyone have a idea here? Failing diodes? Tube issue? Heres a quick clip . Im keying 20 or 40w am off and on here.