Hi, I ride a 09' Fuji Roubaix Pro. The bike came with Alex 200 wheels which are great for my indoor trainer but when I go outside in the coming spring I plan to use some Zipp 202's that were given to me by a race director. These wheels have about 300 miles on them with only 50-100 miles on the gatorskin tires mounted on them. My question is what's the probability that these will flat? I want to use them for a short time trial (4miles) and a couple Olympic Distance Tri's and I'm worried about ruining race day if I flat. Any suggestions or previous experience?