I have a 1998 Yamaha Blaster, and it definitely needs some work. The plastics are in good shape, but there is some fine tuning needed throughout the carb and oil/fuel injection screws. I thought that I was adjusting the idle, but it was really the screw that regulates the amount of gas going in. If I turn the fuel set screw in all the way, how many turns out should be a good set up?