It seems that I had to set these values to get the board to overclock:
CPU GTL Reference : 0.63x
North Bridge GTL Reference : 0.67x
Ai Clock Twister : Strong

Right now, I'm at 400*9 with 1.325V (1.31V under load) @ 50C load with Thermalright Ultra 120 eXtreme with 2 Scythe S-Flex fans (push/pull). My RAM is at 1066 MHz with 5-5-5-15 and 2.1V. Will push it further this evening.