I have an E+ 1000 watt with PCBs problems. Can anyone help? I rebuilt the battery sys and I think I shorted out one or maybe two of the front hub boards. Does anyone know where I can get replacement boards. When I turn on the display controller it toggles between A & B batt, then locks up. Any advice or guidance would be greatly appreciated. Should I trash the front hub components and go to lithium with ems and if I do that will the rear hub run on lithium?