I've got a 360 slim with open tray issue, i.e. it doesn't read any discs. I do have a few spare drives, but I'm reading that if the drive and some key stored on the NAND doesn't match, it won't load games from the optical drive. My question is simply whether this still applies if the xbox were to have a cr4 or ace v3 installed. Would I still need to make sure dvdkey matches with what's in NAND? Also, if I take the DVD drive from a dead console, can Xell still obtain the DVD key if the drive is installed on another motherboard?