Just an FYI, the one thing missing with my GK MB212 is a good cover!
Well just ordered one from Studio Slips! If you are not familiar with them, they make I feel the best aftermarket covers out there! They made me some covers for my Avatar B210 bass cabinets.
They have a wide range of covers for many products, I had to send them the dim's for the MB212 which they now just added to their web site. If they don't have it listed.....they will still make it for you! (No affiliation, just like their products)
http://www.studioslips.com/index.php