I just built my Mini WSM in the last couple of weeks and posted the details here... http://tvwbb.com/showthread.php?41834-My-Smokey-Joe-Gold-Mini-WSM-Smoker-build-with-a-couple-of-twists
I have now made it so I can put 4 grates in it. There is only 3" between each level.
I would like to try...