there are several screws and their size missing from this guide. the 3 on the left side once you remove the battery, the ones that hold the volume and vibrate brackets in place. what size are those? i've been working on this phone 8 hours straight and lost track of where some of the screws go and what size they should be. i was stuck with a power button that wouldnt fit properly and i was at it so long i dont know where some of the screws go. i would really like a detailed guide/chart with screw sizes on it. and using calipers, are the sizes listed referring to the length of these screws? thank you