I ride a lot, and used to race downhill way back in the day, but this will be my first XC race. I'll probably do the 35 miler, 50 feels beyond me right now. I'll be on my Evil Following MB, not exactly an XC bike, and i'm thinking I should put on some faster rolling tires than the DHR II's that are on there right now. I was thinking Ardent front and Ardent race rear? With all the rocks I'm thinking EXO protection is worth it. Thoughts? Who else is racing? What tires you running?