Is anyone familiar with the 78mm BBK plenum/TB? I just installed one and came across a problem, the spring retracts all the way down so there is no tension on the throttle cable. adjusting the screw won't help because the spring is all the way retracted. the problem is that the car is idling below 1000 RPM. before that it was idling around 2000 RPM. also the cable is really spongy now, so the question is how do I get the tension back, do I need to fabricate a smaller spring?