As Columbo once said "just one more thing". When you are playing w/the adjustments , you are going to have to get familiar with the turn to distance ratio . as in one half turn equals 0.002" .Get you a SMALL feeler gauge set from NAPA and use it to see how much one turn will gain you. I did all this because I didn't know the thread pitch . e.g. : thread pitch is 1.25 , this is 1.25mm between thread. One turn gives you 1.25mm movement. You will use this when you are synchronizing the throttle plates.