definitly need to put a few more miles on those rims. i had a set of 24 front / 29 back mavic open sport. im 6'0 250. I put about 1000 miles on them they didn't warp until about 900 miles. then they would warp almost every 60 miles and i keep the bike store busy. final gave up when i was out on a ride and 4 days left till i boarded a plane for the livestrong event in San Jose and i stood up to get into a hill and broke a front spoke.

harris cycles, in west newton mass, built me a bomb proof set of mavic open pro 34/ 36 w/ ultegra hubs ( i had to kneel to the shimano coporate machine because it was the hubs in house) i feel it was a great investment to my health and my bike.