I have a Power Expander Sport Plus that I am trying to use with a BEC on the ignition, to eliminate a seperate battery. I am not using the optical system on the Sport Plus, but using the BEC to power the ignition. I have it plugged in to the E (gear) channel. I am not able to shut of the ignition with the gear switch. It seems to be powered at all times. Using a JR 9303 transmitter. Have I missed something in setting this up?