Cannondale EX cranks ?
 

Does anyone know the story behind these Cannondale EX cranks that have been showing up on ebay and at Nashbar? I bought a set out of curiosity and found that it CANNOT be used with a Dura-ace BB as the
left arm will bottom out onto the BB shell and you can't turn it. It will work with a 105 BB but seems to give a bit when climbing, dont know if it is the cheap BB or the cranks. Otherwise they seem to be ok , the Q is a bit wider than Shimano but they work. Anyone else have similar experiences with these? What are they, factory overruns or a cancelled Cdale order?