macmic87, I test drove the car today and feel it is alittle lean, I got backfire on deacceleration and could feel a slight bog on cruise. I did as you suggested and double checked the center car with a vacuum gauge and between the vacuum gauge and the tach on the timing light I am maximum on vacuum, just a hair over 20 inches. Now for my question, would you adjust the outboards or the center to richen the fuel. Right now the outboards are at 3/4 and the center is at 2-1/4