Originally Posted by Re-Cycle

Unfortunately certain tires are rims coexist differently then other tires and rims. In the past I've found continental road tires to be a very tight fit on mavic rims, just depends. Generally you should install tires with your hands not levers as the lever can puncture the tube but in your case it may be necessary to use a lever, just be careful. Also try throwing the tube in a plastic bag with a little talcum powder and shake it up to get the powder all over the tube. May sound odd but it helps the bead seat and the tube move out of the way. Good luck.