For decades I've been a "foot loop" pedal, mountain bike guy, so these were my first experience with clip in's on a road bike. Price is awesome for carbon fiber, I've been using these everyday since October. 2 Weeks ago I started to hear this annoying "clunk" on one of the pedals/crank/? at the same spot of the rotation. I found others on ebay have had this same issue. After evaluating, I found these 2 little allen screws (each with it's own size) on the front part/right/left side, of the pedal See full review