Makerbot Replicator 2 and 2X Adjustable Feet

Are all of your work surfaces level? Sadly, mine aren't (old house syndrome). Does your Makerbot Replicator 2/2X balance on three sides? Is your manual stuffed under one side to keep it from rocking?
Is so, it's time to put a stop to all that silliness!
While it may not matter (much) whether your Makerbot Rep2 is level, it certainly looks better when it is level! And not rocking has got to be a good thing.
I made this adjustable foot by using some left over 8mm adjusters from an Ikea books