Currently I have all the hash boards running between 8.5v to 8.8v with frequencies of 725M to 762M - and then the individual chip frequencies adjusted for ones that could not keep up with the board level frequency setting...
some times settings don't take on awesome miner. are you posting on his thread and asking him and others about it?
https://bitcointalk.org/index.php?topic=676942.0 this is the link to the awesome miner thread.