I have a 71 Elky with the optional guage pack. Why is it that the amp guage needle always is just a small amount to the right? The only time it reads higher is when the battery is down. It never gets to the point where you would think it's indicating 14 volts on the scale as it charges? It has been this way since I got the car years ago. P.S., I have a new printed circuit and no electrical problems! Thanks, Scott!