I am having problems with my QF 1200 not lignting consistently. I smelled paint burning one day and found burning pellets where dropping into the ash pan. Checking the the burn pot bottom i found a gap where the door met the pot bottom and the door was lose. The door closes all the way but lose enough to leave a gap. Is there a screw or nut that may have losen holding the pot door? Do i need to remove the pot to get to it is so? It appears at start up some of the pellets fall through the gap causing the fire not toget hot enough to go into normal run mode. It will start if i hit the reset button and more pellets drop.