Why isn't T-Mobile and Ullrich riding a disc in the back? Is that four spoke up front and back more aerodynamic? I find that hard to believe. I remember earlier in the season he had a disc at soem TT, when he came back to racing in tour of germany I noticed he didn't have the disc back. Anyone heard anything? I thought he would be all over anything to give him an edge over, or at least equal, armstrong. Especially considering his considerable TT skills.