Half Downclocking?

I seem to have hit upon a strange problem. While upgrading my drivers from 175.80 to 177.92, as well as running windows update and downloading a bunch of updates, my video cards became downclocked.

Now, I'm no stranger to this, so a quick reset of my SLI from disabled to enabled fixed the issue right up....until I actually checked the clocks on the secondary card: they were clocked at the 3D level instead of the Extra level (for those of you familiar with Nvidia BIOS via NiBiTor).

No matter what I do, or which registry entries I edit, my secondary card fluctuates from either Throttle mode to 3D mode, it never goes into the Extra mode (which is full clocks). The Primary video card works fine, going between 2D mode and Extra mode each time I flip SLI from disable to enable. Even stranger, the secondary card will remain in 3D mode when I disable SLI which causes the Primary to go to 2D.

Does anyone know what may be causing this? I have tried 4 different drivers (including my original drivers which used to give me no problems at all), as well as both driver sweeper and driver cleaner in safe mode along with "have disk" to install. I have also tried overclocking the vBios 3D mode to try and bypass the issue, but this did not work.

I'm running the NP9262 with Vista 32bit Home Premium, which I clean installed off the Sager supplied disk. I have dual 8800 GTX cards.

Thanks in advance.