I've finally figured out what was making my system unstable at ANY FSB with this board/memory. Its RAS# Precharge (which are connected to the All Precharge to Activate and All Precharge to Refresh delay settings in memset).

I have 2x1 Crucial Ballistix, wich will NEVER be stable at default speed 1066 on this board, no matter how loose timings and subtimings, and no matter the strap.

For this setup i use 2.00B, wich seems to allow the best Performance Level (TRD). I keep Performance Enhance at Standard in BIOS since it all really does is tighten Performance Level (TRD). I find its better to set it with memset.

With RAS# Precharge set to 6 or lower, OCCT will crash within 1 hour, usually after about 30 minutes.
I've also found Refresh Cycle Time and Refresh Period can be be set really tight without any loss of stability, and gives some extra performance as you can see from Everest. I keep FSB at +0.2 and MCH at +0.275 with active cooling.

I believe i can drop off a bit more on the vcore now that we have Loadline Calibration, (it DOES work, without loadline, droop is 0.4-0.5, with loadline, its 0.2).

Another setting that seemed to help me personally was to set the MCH clock skew to around 350ps. And DDR Termination to +50mV.

Hope this helps some of the others out there with Crucial Ballistix or other sticks that are a bit tough to get running straight with this board.

Again, like Ive said before, with only 1 of the sticks, i never have to consider any of these settings,- its only when i use both sticks in dual channel that default settings get unstable.