I can't set LLC Levels. ):
I actually don't have "levels" either. It's either Enabled/Disabled/Auto for me, but Auto doesn't seem to do anything because it acts the same as Disabled, for me. And Enabled just cause the voltage to be WAY higher than it needs to be, so I just leave it disabled.
Seriously though, try a much lower offset, like +.025 to see how that goes.
Also, this might help explain offsets a bit better. http://rog.asus.com/forum/showthread.php?2162-Overclocking-Using-Offset-Mode-for-CPU-Core-Voltage