The aluminum insert that is cast into the carbon arm, and contains the threads for the pedal, has worked loose on the non-drive side of my Kforce light crank arm. Anybody had this happen before? Any ideas on fixing? It only moves a very small amount as I peddle, but it is annoying and I'm sure it will get worse if I continue to ride it. They are at least three years old, way out of any kind of warranty I'm sure.