Ok after fighting a long battle with this hanging idle with my BF throttle body, I have set the TPS, done the adjustments recommended by BF, cleaned the IAC and everything else under the moon with out having to go with the return spring just yet. Im just going to bite the bullet and do it. My question is for you guys that have done this, where did you get yours at, and what size and length did you use? I have spotted a couple ways to do it just by looking at my KB 2.2 but would like some recommendation's as well.