Hello to all. My question is about the Idle Air vent on my 4MV. The piece with the rubber disc that connects to a lever via linkage that activates the Power Piston. The rubber disc doesn't appear to move when the accelerator linkage is moved or at idle. Should this disc be slightly open(raised up) at idle and if so how is this obtained, bending the linkage and if so by how much? As is now it is simple covering the vent and never moves to open. Thanks, hope this somewhat makes sense.