i bought a LOOK KEO sprint pedal. i used it once only and the allan key screw is already broken. i asked the shop to give a me new one but he said no because it is my fault. he told me the screws are sensitive and i must know the technique to do it. now i cannot tighten screws, adjust the tension. any of you face this situation? wat can i do? i used a LOOK carbon pro maybe 10 years model but strong and no problem.