Hi chrisb
From your logs ImgBurn actually burned at 2x
W 22:41:11 Write Speed Miscompare! - Wanted: 13,487 KB/s (3x), Got: 8,990 KB/s (2x)
W 22:41:11 The drive only supports writing these discs at 2x, 4x, 6x.
You may try 4x or even a different brand of media.
Your drive also has a firmware update you will find it here
NOTE: if you do not know how to flash your drive do not do it, it will render your drive useless.
Hope this helps
CBR929