I had a problem with high idle. After getting my Bentley book, I adjusted the throttle stop screw as was stated with a feller gauge .0015 in. WHen I started the car, my idle was up to 2500. I backed off on the screw until I got it down to where it needed to be. Maybe I measured wrong when I adjusted the butterfly plate, but now it seems to run well except for some minor missing in Park. Any thing else I should check?