The Inlet cam has 10degrees of movment in it as this is its range when it adjusts the timing. You do not have to set the timing on the VVT, all you do is lock the crank with the pin, put the flat bar in the ends of the cams then undo the exhaust and inlet cam pullies. Put the belt on, tension it and then tighten the pulleys, the belt and pullies will have settled in the correct position and not give you the EML. If you simply take the belt off and put a new one on without loosening the pulleys the timing will be out and chuck a EML due to the inlet cam timing being incorrect.