Guide was perfect. Saw several other guides mention T5 screws for back cover. This guide was correct with the 5-point Pentalobes. Got the iFixIt 54-bit driver set. Worked perfectly. Bit disappointed that CoconutBattery reports the battery is capable of 98% charge (6583/6700mAh) but I can live with that vs. the 48% on old battery. Thanks for the guide and parts.