Hello guys, I purchased the late 2013 Macbook Pro 15' Retina 2.3GHZ three days ago. Everything is great except for when I press down on the very bottom left hand corner of the laptop when its open, it makes a "tick" sound. I'm also able to replicate that "tick" sound, when I pick up the laptop(in the open position) from the bottom portion under the keyboard(left and right area surrounding the track pad) I was wondering if this is normal, and/or if any of you guys experience the same thing. It's my first Mac, and I'm not sure if the laptop should or shouldn't make these sounds. Thanks for everyone's help and input.