Can someone explain the Timing from the Pump screw to the BK mod itself. I have had to make no adjustment to the Accel, but was able to adjust down the duration from the Mod. What purpose is the Pump screw ? Why do Butter Flies ? Why is All Green Also When is Helen Ready ? Seriuos Though I find no refreance in the Manuals, and true to form the Dealerships are Duhh Wudya mean , Geez I would be better off asking Clinton to tell the truth ?