I bought a new liFe 6.6 volt 1800 mha battery and was wondering if I need a voltage regulator to step down the voltage in my plane. I'm using a futaba 6ex radio with a R617FS receiver powering 5 futaba 3003 servo's. the guy at hobby town says no as does tower hobbies web site. If any one can give some more assurance I would appreciate it.thanks scott