Upgrade your flimsy Weber Smokey Mountain door with this quality version.
Arguably the biggest weakness with the otherwise solid build of the Weber Smokey Mountain is the removable front door.
It is flimsy and it leaks, so you cannot control airflow properly and that means you cannot maintain consistent temperatures. An inexpensive solution is to put gaskets around the door.
A more elegant solution is to replace it with the heavy duty stainless steel door from Cajun Bandit. They also sell a grommet kit for thermometer probes, a rotisserie, and a ring that allows you to make the WSM taller so you can insert more racks.