You didn't cover all the threads with teflon tape did you? Cover only the last half of the threads. If you cover them all, it will mess up the grounding of the sensor.
How long did you drive the car for it to idle to 1000 rpm?
Has the TPS ever been off the throttle body?
Are you sure you are looking at the throttle stop screw? There is another "stop" that is used for the dashpot and it's right next to the throttle stop screw and is easily confused.
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