I already watched the Just SU DVD and still have some queries on how to tune both Hitachi SU Carbs on my 240z. The procedure i am following is:   1. Remove air cleaner box 2. Verify each piston moves freely 3. rotate both idle mixture knob until it seat counterclockwise 4. rotate both idle mixture knob 2 full turns clockwise. 5. Crank the engine with the choke on for 3 minutes until it warms up 6. fully unscrew the fast idle screw 7. fully unscrew the balance mixture screw which is besides the r