I got this stove last February so I still new to this. Its been in the 40s and 50s at night so I lit the stove. I have it on stove temp with the thermostat as low as it goes. When I got this last year it was cold and the thermostat was in the 4 to 5 range, feed rate on 4, minimal ash at the end of the fire pot and everything worked great. Now with it set on low, feed still on 4, the fire is towards the bottom of the fire pot near the auger. I am afraid its going to start burning in the auger and get to the hopper. Is this normal when its set on low?