Ok...I'll have to do those adjustments. As for the break in, I didnt mess with any of the screws untill I went through about 4 tanks of fuel. After that was finished, it just didnt seem like my car had the speed it should. Thats why I started messin around with the screws. Also, I am very bad with measurements...the opening in the carb right now is set at about 1/4. So Im thinkin it needs to be closed alot more or a little more...lol?? Are these real scale measurements also? So if I looked at my tape measure to get an idea how much 1/16th is and adjust to that size, it will be right or at least close? Thank you so much and I will post again and let you know the outcome.