iHAS424-08 Speed

I just bought a iHAS424-08 drive and I’ve updated the firmware to ZL1N. For the life of me I can’t get this thing to burn above 8x. I’m running Windows 7 and the drive is in DMA mode. I select 16x in Nero and it stalls at 8x taking about 8:30 minutes to burn the disk. I’m using Verbatim MCC004 disks. My old Samsung SH203 never had a problem burning a disk in 6 minutes at 12x with Codekings firmware. Please help me save the little bit of hair I have left. Thanks

Was the problem occurring before or after you updated the firmware?

You did make sure the drive was working OK, before you started messing around with it, right?