I have a 6 yr old Oslo. The house smelled smokey last night. I thought it was just the wood was wet or something and I had the door open trying to get it to burn better but I have it burning good tonight and when I open the door the flame nd smoke tries to come out into the room . As far as I know you should be able to burn with the door open so I suspect it's not drafing right. As soon as it cools down I am going to check the chimney and also pull the pipe off the back of the stove and check for build up. Is th3ere anything else I should be checking ?