Methods and systems for disambiguating entries within a contacts listing database of a mobile device detect newly created contact records having a same data element and alert the user. The pitch control assembly comprises a pitch control assembly housing mechanically coupled to a first stop bar, a second stop bar and a cushion mass. The heat shield member is located closer to the evaporation source than to the retention member. In the specific embodiment, the first mechanism includes a rotator. Upon the detection of such a change, the operation of a phase lock loop such as horizontal phase lock loop andor vertical phase lock loop circuit is adapted as appropriate.