CAUSE: There are two sets of Spacer Tubes.The side fire box comes with the spacer tubes for the 2121, 2222, 1224, 5050, and the 2123.
Outlaw grill, (Model 2137) you need spacer tubes, part number 550070.
Grillin’ Pro, (Model 3001) you need spacer tubes, part number 550072.
Duo Grill, Model 5050), and the original spacer tubes were too long, you need spacer tubes, part number 550071.
CAUSE: The knockout damper plate between the end plate on the grill and the firebox was not removed.
SOLUTION: Break out the plate and re-install the Fire Box.
Customer: Please call our Customer Service Center. Any one of our Customer Experience Specialist will be happy to assist you.