I got this question this last week: I am doing my ladies bike- which is a '94 600 dual carb, it has a rejet and stacks, the idle is high (goes up and down) and not consistent at the RPM it idles it. It will be fine then jump to 2500 to 3000, then might take it for a spin and might act fine or stay the same. How can I make my bikes idle stay consistent?