C8HW BIOS 30035800x4x8GB 4000 CL18 RAM (CWM32GX4M4Z4000C18)I cannot get past a F7 qcode at 1900 fclk. It will boot at 1866 but no higher. I've used the safe settings from the DRAM Calculator including the voltages. Is there a guide or any known setti...