Hello Everyone, I've been using my new 15" Macbook pro replacement from apple and I noticed that there appears not to be any ground clearance between the bottom of the case and my desk. Is this normal? The feet are there, but it's so low off the ground that the bottom of the case slightly rubs against the desk when i move the computer on my desk. I just put tape in the middle of the bottom and it's so close to the tabletop that now one of the feet are off the ground. Are your Unibody macbook pro's like this as well or should I be worried about my case?