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Rich or lean?

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If you had to choose, would you run rich or lean? Why? I'm going on a ride in a couple of weeks that's starting out at 3000 ft and will finish up around 7500 ft. I figure it's better to be lean down low and right up top, but what do ya'll think?

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You are going to want to shoot for correct jetting for 4000 feet. You will be slightly lean at 3000 and a bit rich at 7,500. If you jet for 7,500, you may be too lean at 3000. It is always a compromise. Jetting is rarly perfect becaue air density changes with altitude, temperature and barametric pressure.

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