My husband purchased a Sid as a gift for me, but I am having problems with it after about 2 weeks of use. When I press the fire button (only once) and take a "drag", the Sid will change menu functions on me. Ie: I will have the unit set at 6.5watts, and it will change to 8 watts by itself. Also, I get a "short" reading often. I have no idea what could be causing this. Any ideas??