Please can anyone advise on what might be the issue with my new Moment or my use of it? The wheel on both sides of the tablet is unbelievably erratic. Swiping clockwise on the circle sometimes turns volume up and sometimes down and sometimes pauses. Swiping anti-clockwise sometimes turns volume down and sometimes up to deafening levels. The centre of the circle is unresponsive most of the time and only intermittently plays or pauses as required. I have powered off and a tried a factory reset to no avail. Thanks for any tips.....