I have used this stove for 3 years with very little problem, but this year I am having problems at startup. When the thermostat calls for heat the stove will come on as normal but the auger only turns for a few seconds and only drops a few pellets,when these few pellets ignite it doesn't get hot enough to drop any more. I can hit the reset button and it drops enough to startup fine but once it goes out it does the same thing again. Anybody ever have this happen. Thanks