My RS3 idle is so high that the car drives it self pretty fast, I have the idle screw just about out, and the trim on the remote is at 60, at 60 it idels the lowest but not anywhere low enough.

your idle screw may be set right but if your servo neutral is set too far up, then it will hold the throttle open, sometimes you just need to lengthen the linkage

Ok I will try that, Thanks....