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'03 rm250 jetting

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idk how to jet so i need some help..i have a pro circuit pipe, v-force3 reeds, and a twin air air filter and was wondering the correct jets and stuff like that..my elevation is @ about 800 feet and i run premium gas wit amsoil domnator oil 50:1 ratio....and its pretty humid here in kentucky..so n e help would be apreciated.

Stock Recommended

Main jet 175

Needle-clip position N8RH-3rd

Pilot jet 48

Air screw 1.5

Slide cutaway 6.5

and wat is tht slide cutaway:excuseme:

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