Here's the problem. You're burning too fast (6x). You still haven't been able to prove that the disks will complete an XGD2 in another burner since you don't need the ihas for that. And since the disks keep failing just after the layer break, it leads us to believe that the cheaply made MEMs are the issue. The answers haven't changed just because you started another thread. And they won't. You got your money's worth out of the first 20.