Had a hopper smoulder from not dropping the clinker and the pellet fire worked its way into the hopper. Cleaned it all up. (basement smells smokey now) Issue: Auger will not spin. Used mirror to check and I see blackened corroded junk all around auger. Worked at it with screw driver/hanger etc. Motor works but auger wont spin. Have read about taking back off and forcing it with vice grips. Question: Is there a solution to spray up into the auger that might disove the carbonny blackness encrusting my auger or do I keep chip chip chipping and hope at some point it will break free?