I am in the process of rebuilding my Q-Jet to put back on my Suburban. I have it all apart but I screwed up when I took out the..... well I don't know how to describe it. It is the needle and spring in front of the power piston in the float bowl. I screwed this out without screwing it all the way in and count the turns. It appears that the pin in the piston uses this for a downward travel stop. So does anyone know how many turns out it should be? I have a rochester book nad the instructions but I am yet to find anything that refers to this piece, mainly I am not sure what it is called. In the instructions it lists a air valve to be out about 7/8 to 1 full turn is this it?