What they all said plus...doing this made my front tire seem lighter which took some adjustment on climbs. I ended up changing where I centered myself over the bike to keep the rear tire hooked up and keep the front end down. Overall, the results where favorable IMO.
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2003 Iceman Challenge - 2:34:55 - 897 / 2,000*
2002 Iceman Challenge - 2:39:23 - 1093 / 2,186
2000 Iceman Challenge - 2:49:18 - 1516 / 2,153
*estimated