Hi I am new here. I am have trouble with my 2007 Mustang GT V8 4.6l automatic. Is getting no throttle response and is throwing codes p2111 p2104. I've tried everything then noticed the flap wasn't opening. I wanted to clean the TB and when I did the top where there is a calibration set screw, it's black plastic, well it popped off and is now broken and spring is somewhere in my garage. Anyone here know how I go about finding a replacement instead of the whole throttle body, which of course is pricey? I do have the pin that was inside of this broken plastic hollow threaded on the outside screw. Not sure what it's even called. Any help would be appreciated. Thanks