For those who put a second fan in front:

I picked up a few different fans to try: Arctic F12 can only be installed in one direction (push, not pull), Enermax has four pins connector, but connector has two small plastic rails which prevent the connector to fit pins (I did not try to push it hard yet) and Corsair air SP120 has just 3 pins, so no PWM. Anybody had trouble with fitting regular fans connectors with Ants pins? Did the second fan in front even helped?