hello - I've had a mini for a few years and it'/ worked great. Now the auger makes 2 sounds. One is the sound of the auger turning, the other is a sound of it seeming to try to. On lower settings it stays on over night, on higher settings it goes out over night. I emptied the stove, took off the auger co we and cleaned the auger. It looks great and does the same thing. Ideas? THANKS!