I am experiencing a slight yet very noticeable wobble on the front left corner of the laptop base. Every time I rest my wrist down to type I can hear and feel it "level out" on the surface it is setting on. I've checked the rubber "rails" on the bottom of the chassis and everything seemed normal. I purchased this originally on November 25th from Best Buy. The machine had faulty internals so I had to return it already and I received this machine that has the wobble. Anyone have any ideas?