I've had my vertical smoker now for 2 months and used it 4 times. During the 3rd smoke I smoked a 20 pound turkey it was delicious. For the 4th smoke I did chicken wings. During end of that smoke I went out to find the PBV4PS2 on FIRE . I immediately shut the power off removed the chicken and the fire cup. A few minutes later the fire went out. After the unit cooled down I took it apart to investigate. I was shocked to find that the grease funnel did not direct the grease into the grease pan instead it made its way down to the fire chamber, puddle up there and caused the fire. Thank God the unit was not up against my house and I was home. Please watch YouTube of the water test. You will see the path the grease went inside of the smoker fire chamber instead of draining into the grease pan. Has anyone else had this problem? As a side note there was an amazing amount of ash accumulation under the cover.