I recently bought a new pair of shoes to replace my worn out Nike Cross trainers. I ended up with Sidi Dragon 2s. I had never used bike-specific shoes before this. I found that the Dragons would slip around on the standard platform pedals on my bike. I concluded that I needed to get clipless pedals to work properly with the shoes. I bought Shimado PD-M324s. They came with multi-release cleats, SM-SH56. Today was my first day using them. The clipping and unclipping works fine, but when walking with the shoes I hear a crunching sound... it's the cleats hitting the surface I'm walking on. Not good. I thought the whole reason for having this system was so I could use the shoes while walking without the cleats hitting the ground? This isn't going to work; the cleats are going to get worn out in no time. Again, the shoes (and the soles) are new. The cleats are screwed in firmly. I've followed the instructions for the pedals. Sidi says to use the screws that came with the shoes. I used the ones that came with the pedals, but I can't see how that would matter. Am I missing something here? Aren't the cleats supposed to be recessed enough that they shouldn't be hitting the cement underneath me? Many thanks for any advice or suggestions.