Hi everyone, I just exchanged my (not retina) 2012 Macbook Pro for the second time this month, but the trackpad, hinge, cd drive, and case seems to be loose and rattle a lot. When click the trackpad, I can hear a rattling noise along with the normal click noise. And the black hinge seems to be loose when I touch it. The optical drive seems to be very loud and vibrate the whole Macbook when I power on. The screen has also kind of a yellow tint, also when I plug my earpods into it, I can slightly hear a weird digital or chirping noise while using them. The same issues also happened to my original 2012 Macbook Pro but not my second one. My second Macbook Pro was basically perfect, except a buzzing noise came from the screen so I had to return it again. I don't want to go to the Apple store for the fourth time and ask for a return again. Anyone know how to fix these problems?