So you can push the clutch in and the clutch will no longer be engaged? Have you tried every gear?

Oh right, idling, duh. I meant to type that. I haven't used the idling valve/screw on my engine yet (haven't had to), so I don't know whether loosening or tightening that screw raises or lowers the idle. However, 1000 RPM is an extremely high idle, so I am going to guess that if the screw is all the way in, you should let it out and I would expect that idle to go down. Careful, though; I hear that the valves are very sensitive to small changes. Also, be sure to adjust it while the car is running.