not sure if this is a normal trait for these stoves but my glass gets a black soot build up on the right side after about 2-3 hours of run time. it does it faster on higher heat settings it also seems like my fire is kind of lazy on the right side also. i have replaced my burn pot gasket as per the suggestion of englander and perfored the flame test around the door and glass to look for leaks but found nothing. am i being fussy or does this really sound like a problem?