I am doing a Cross Country GP race this weekend and I have not had my bike long enough to know how many miles I can conservatively go before I refuel. The laps are 10 miles long. I have a 2000 WR 400 (Canada model) with cams, no air box lid, White bros ex, and a slightly larger fuel tank (the one for the YZ seat). I was told the tank is hardly larger at all. The course should be pretty fast but not desert fast. But, also not single track slow. I am only looking for what you guys have experienced with your bikes, and I was hopping that I would get a number of replies so that I could get a good average slice of what to expect and then play in conservatively from there. I know riding style and jetting and all that will play a big part of fuel economy and I plan to take that into consideration. And, does anyone know how many miles you can go on Reserve? Maybe more then ten miles at a race pace with any luck? Thanks! PS Is anyone racing at Prairie City this weekend?