I am interested in finding out if any one can figure out how to perform maintenance on the exhaust fan on the Kozi KSH stove? The manual states to open the left side panel to access the exhaust fan. Using a common screw driver, remove the 6 sheet metal screws holding the fan motor to the housing. Using a brush, clean all ash from the exhaust fan blades and housing. Which sounds easy BUT you cannot open the left side panel the whole way (only 4 inches, IF that) because the damper rod will only extend a few inches. Does anyone know how to access the exhaust fan so I can properly clean it.. I think there is ash build up in the fan because of the very loud humming that is coming from the fan now. Thanks for any help the readers can give me..