That is how it was operating until it sat for about a month. When I would let it idle the hand was at the center dot and when the engine rpm was increased the needle would jump just past center toward charging and after a few seconds come back to the center dot. I have a new battery and new alternator.Belt is new and it starts right up when I press the start button. This is just a little off from where the needle would surge at sudden rpm increase.Even when the headlights are turned on there should be a sudden discharge then the needle should return to the center dot if running past idle. Does this sound right?