has anyone else run into machining flaws in their unibody MacBooks? i just got out new MacBooks for our office and noticed one looked funny. after looking closer at the edges of the keyboard "well" i noticed there were flaws. i put a straight edge up to the machine and notice several areas that were 1-2mm off forming a wave along the edge of the "well". the local Apple store is going to swap it out for me. i have to go back tomorrow because i forgot the box the picture below shows the area with the largest error above the f11/f12 keys.