Hey Bill - did you ever get the voltage problem resolved? There's also a new BIOS posted for the DP67BG (BIOS 1979). Maybe that will help.
It's pretty simple. Just set the dynamic voltage to 1,25 then you wil have under load 1,4. If you need more voltage but want to keep the idle voltage low, then increase the CPU Turbo voltage offset in small steps to achieve stability.