i get the same problem i but the other guys i ride with say i might just need to get used to it. I have the ball of my foot pushing down directly over the axle of the pedal, thats how i feel more comfortable but iv noticed that my clip on my left foot has moved bak a bit so i am pushing a little more on my mid-foot area and that foot went numb a lot faster and when i fixed it, it got a lot better. Is there a particular position your foot should be on the pedal?