I don't think this is the one but this guy kind of shows how to change the setting. https://youtu.be/f4WPiAloYtA
You basically screw in the idle screw to lower the IAC setting and then cycle the key off and back on again to save it and re-set your TPS to 0. It took a couple of cycles to get mine down under 10%. The instruction say you want between 2 and 10. I have taken it out yet to see if it changed anything but at least it's set correctly now. So that's got to be better.