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Message: [QUOTE="dirt bike dave, post: 1208026, member: 18302"] For those who have not been up there before, I highly recommend dropping your needle down (aka raising the clip) at least one groove if you are used to riding in the high desert or at Hungry Valley, and two grooves if you ride close to sea level. If you ride a 450+ thumper, you probably don't have to change your jetting, as you will still have plenty of power for the tight single track. Some of the trails are 9,000'+ elevation, and the little bikes don't breathe so good up there without a little jetting attention. [/QUOTE]