Ok, I sanded down a wrench so that I could hold both nuts at the same time and the shaft did not turn at all. So which way do you turn it to increase it (is it the more the bolt sticks out the more fuel.) and which way to decease it. Mine was a non turbo that I added a turbo to. The bolt is sticking out a long way. And after I get into it a 1/4 or half of the pedal I get no gain from pushing it the rest of the way to the floor.