Don't use the new style Shimano internal cam skewers (pic
#1 ). They must have subtly changed the internal geometry to allow for aluminum parts. I've had a couple hard starts and the rear just popped open. Three times. The old style Shimano skewers are better (pic
#2 ). Those will
probably work for you. I had one pop open (Same situation and bike as the new ones). For guaranteed security, use the old Maillard/Spidel skewers (pic
#3 ). Crappy plating, but I have never had any issues with one in the 4 years I've had them.