We have a 2.5 week old stove that we are loving using, but we have run into a problem. The primary air control lever on the back right of the stove is being weighed down (I am assuming by the internal ball chain or some other component) and this results in a stove that is hungry for air when it should be in a higher airflow position. When we move the lever to the higher flow position it is pulled back to the lower flow position. The stove is in our brick fireplace attached to the lined chimney and accessing the back is very difficult. Is there any way to fix this issue without disconnecting the stove from the chimney and pulling it out of the fireplace? Anyone have any experience with this issue?