Anyone having issues with their down button on the foot switch for the new 2.0 system? When I installed mine the DOWN foot switch worked fine for about a month no issues, double tap worked perfectly. Fast Forward a few months and the DOWN button aint working no more. Could it be a battery problem? The UP button works fine which leads me to believe it may be a battery, but being that I hardly ever use the down button, I find it hard to believe the battery is dead in the switch. All other switches/buttons work. No issues with blades at all except this one foot switch.