I have a leyden that was installed in December of 2008. Recently it has started to make a slight hum when the auger is turning. Well, last night it became more than a hum. It is a rather loud "buzz" noise. Can anyone tell me if i have just missed something in my cleaning that is bothering it or is my auger or auger motor about to go? Thanks for any help you can give. This forum has been so helpful id learning my stove.