I just made the switch from my old Keos to Speedplay Zero (I was tired of wearing out the Keo cleats). I cannot seem to get the cleat adjusted to easily snap into the pedal. I've lubed the cleat and backed out the screws so that the screw heads are flush with the bottom plate of the cleat. And still it's very difficult to click into the pedal. I literally have to stomp on it. Many people have recommended this pedal to me but I can't seem to get the tension adjusted correctly. What am i missing here?