ok i got a problem, last night i decided its time to clean my intake manifold and my intake vavles so i went out and got a can of intake manifold cleaner, and used it, it stopped the white smoke from coming out and seemed to make the engine response a lil lil lil bit better. anyway, after i did that i noticed that my idle speed was at 2k and holding, so i decided to try and adjust it. i turned on my car, unpluged the IACV and attempted to screw in the trottle screw to lower the idle speed, the lowest i could get it was 1.5k, the screw is all the way in, also when i plug back in the IACV it raises it to 1.7k-2.5k anywhere inbetween but its steady it doesnt flex. i dont know how else to lower my idle. it should be around 600-800rpm. Please help ASAP