A method and apparatus for handling misdirected responses in a multi-media messaging environment is described. The propeller shaft includes a polygon shaped propeller driving element that is countersunk into a rear portion of the propeller. The plurality of ground vias shield the signal conductor via, thus providing electrical isolation for the conductor via from the rest of the circuitry. An angle is formed between the recession-wall and the recession-bottom, and the angle is less than 90 degrees.