I have the same results with certain disks, for instance, Journey's Arrival. If I choose another disk and set the drive to 17-40 and speed read, it works. Some disks will only be ripped at 8X regardless of what you do. I sometimes have to save my settings and close PlexTools, then restart it for the new setting to take. If you previously ripped a disk at 8X with PlexTools, the subsequent disks will revert to the same speed. Go figure . . .