Hi there mate just to let you know i had a lot of problems with my duplicator aswell but i found out using verbatim 8.5 dvd+r dual layer works a treat every time also i changed my duplicator to a 3 in 1 pioneer one in exchange of my philips for some reason the pioneer is a better writer when it comes to 360 games as for the verbatim i have never had a bad burn yet if you have access to ebay at all you can get your hands on a Samsung SH-D162C drive Kreon Flashed Backup to read XBox 360 Games straight from your pc if you need any tutorials i have any amount from using the usb xbox 360 connectivity kit on flashing the hitachi drives very easy also how to burn the games the best step by step guide going guaranteed just let me know and i will drop you an email regarding these mate