I tried disconnecting the vacuum line running to the "ANTI-AFTERBURNING CONTROL SYSTEM UNIT" when it was at high idle did not lower the idle, i disconected the the plug running to it but then it did not want to idle, i think this was becuase the plug has two other wires in it one for the fuel cut off and auto choke? When i get more time ill try and disconect just the wires running to the unit, unless someone has a better idea.