I am not very knowledgable about clocks and after having wanted a proper clock for many years, I finally bought one. It is a HAC wall clock and I need some advice on the pendulum. At the bottom of the case on the back there is a brass plate with markings on and all I can think is that this is marking where the pendulum should be swinging inbetween. (of course I could be wrong). I have made sure that the clock is hanging straight and yet the pendulum swings more past one side of the plate than it does the other, if that makes sense? Can anyone offer some advice? Should the pendulum swing inbetween these markings and should I adjust the way the clock hangs so that this happens?