Just started riding this week with my Speedplays and Sidi's. I tried on every shoe my LBS had b4 I decided on the Sidi's. They seemed to be the best fit for me. Went 40 miles yesterday and all seemed well. I've also read it's a good idea to try and move or wiggle your toes once in a while while riding. I would also have your LBS check your cleat position as well. Hopefully that's all it is.