I have a 3500 and a 3520. The 3500 will take all the Ritek G05 and MCC003 disks I have. The 3520 on the other hand won't take anything I try. They all fall off around the 4 gig mark when doing the RPM tests. I've tried the new Dee and Liggys firware but that doesn't help. Does anyone know of a different firmware that might help solve my problems?

Thanks!