Was transporting computer... nearly dropped it, saved it, but as a casualty, my pinky caught the letter "K" and sadly, the letter is no more. Has anyone replaced keys on these before? You may be wondering how I can still type the letter "K" - well, there is still a little rubber piece I can press down on and it works, which makes me think that the entire keyboard module isn't damaged. I found a place that sells replacement keys and I just ordered a letter K. Is this a pretty simple replacement? I don't have Applecare or anything and I replaced the HD w/ an SSD so it's not warranty eligible anyways (non unibody). Appreciate the feedback!