I read back page 12 and did some calculating with the formula, one of my miner getting errors at 375mhz and another two was getting errors at 393mhz. I want to get near zero error , so far 1 at 368.75mhz and 2 at 381.25mhz no errors after 1 hour. I was able to get around 187Gh/s and the 2 higher clock around 196Gh/s

here are some hex i calculated using the formula
Hex        mhz
6b89      366.67M
5d05      368.75M
6c09      370.83M
5e05      381.25M
4f01       387.5M

Hope it helps