A fault in your design came to my attention very recently, and a rather disturbing one too.
I regret to inform you that it appears that megadrum modules are very fragile and horrendously easy to break if a hammer happens to fall on it from the 7th floor.
I was shocked.
Have you ever considered making it from the same materials as those black boxes they use in plains?
your wonderful without a doubt ( and perhaps slightly evil) progeny.
