Yeah I've tried plugging it into a 4 pin and 3 Pin connector. It's almost like the thermistor can detect the temperatures from one side but not the other. Example: When I have the fan as Intake, the fan speed wont kick up at all, however when I set it in an exhaust position, the fan maxes out almost instantly, I keep moving the fan away and to the heatsink
However one thing interesting to note: When I touch the thermistor when it's in an exhaust position with my finger, the fan speed will decrease, and when I take my finger off, the fan speed increases again. It's almost like the thermistor isn't reaching the heatsink I guess?