Hey Guys i have a 97 626,I4, at, a/c, 2.0 i took off the throttle body to clean it out, along with the iac because my car has been idling rough and no matter how i adjust the idle air screw it idles rough, so i removed the throttle body, when i saw this screw, it looks like it should be touching the throttle plate arm but it isnt, can anyone tell me how to properly adjust this screw, or a measurement to check the adjust?