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hey there i got a 1998 powder special 600 twin for the women to ride and i was wondering if anyone can tell me what the best setup up as far as weights, springs, helix, and also jetting needles, and pilots to run at 3000-6000. i don't have the time to play with it and mine so hopefully someone can help with this cause it doesn't work like it should and cats specs pretty much suck, thanks