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Thumper racing with JD needle

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I just got my 2010 450 xcw together with a thumper racing 519 kit. Went for a break in ride, everything ran awesome, thanks for the help Thomas! My plug looks a little lean and i only ran 1/2 throttle so I think I need to richen the needle. I have the needle that came with the kit in there clip on the bottom. I have some JD needles, has anybody tried running a JD needle with this kit?

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Your safest bet would be to contact TR and let them know of your concerns. I'm sure they will set you straight.

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