I have an XXV sitting in a corner. Exhaust vents straight out the back for 6 ", through a 45 deg. elbow, straight through the exterior wall and into a tee. Vent extends up 6' to a flue cap. Bottom of tee has cap. The only portion of flue I have not cleaned is the section from stove to tee. Do I have to move the stove to clean this? The stove weighs 375#.