I just bought a humppack battery and the plug is like a servo plug, and the plug on my switch is a smaller one. Is there some sort of adapter I can buy to convert it or do I need a new switch? Right now I am running without a switch and just unplugging the battery. What setup do you guys have? Oh, by the way it's a stock hpi sf-2 Rx and a hpi humppack from an XL.