My Fiance and I just had our brand new Quad 3100 installed . Im new to wood burning and my fiance is out of country. Trying to learn the stove and how it works. i have read thru the manuals operating instructions ,but still having trouble. The glass gets black when i build afire and the fire dies down also after awhile. What am i doing wrong. My fiance suggested i come here for help so im waiting on some advice.