so im having some issues with my fans. i have a fully watercooled rig. i5 3570k cpu with a gtx 680 SC. i obviously removed the stock heatsink of the gpu but i have an adapter that plugs into the vga fan connector and allows me to plug in a regular 4 pin fan. i have a 4 pin fan splitter and 2 pwm fans on a radiator to cool the gpu. however, i cant change the fan speeds at all. using evga precision, they stay at 40%. using speed fan to link the gpu temperature reading with a fan and set up a curve, they stay at 40%. im thinking the splitter have have an effect on it. im not sure. any suggestions? further details can be provided as well if needed