There is another adjustment screw underneath the throttle body that you can mess with. The one on the manifold/accelerator cable you are not supposed to mess with, but I never listen anyways
You sorta have to feel around for the one under the throttle body. It is towards the right side of the throttle body. You don't have to take the intake elbow off. Feel for a little opening with your fingers underneath the elbow near the bolt holes of the black plastic round thing that has a hose connected on each end. Once found, find a suitable flathead screwdriver and turn to desired rpm.