Hi guys. I upgraded my memory on my Mid-2012 MacBook Pro. Unfortunately, I lost the positions of where each screw went. According to this guide, these are the following screws: Three 14.4 mm Phillips screws Three 3.5 mm Phillips screws Four 3.5 mm shouldered Phillips screws However, on my MacBook Pro, I have the following screws: Three 14.4 mm Phillips screws FOUR 3.5 mm Phillips screws THREE 3.5 mm shouldered Phillips screws So can someone with a '12 MBP confirm/verify where the 3.5 mm regular and shouldered Philips screws should go? I swear I count three regular screws and four shouldered ones. Everything screws together properly and booted up fine. I imagine with Apple's super close tolerances, I like to use the right screw in the right location.