I have a throttle curve "EP0-0, EP1-25, EP2-50, EP3-75, EP4-100" in "NOR" mode on my Copterx CT6B Tx. My ESC is the one that comes in the Copterx 500 Value Electronic Parts Package. When I connect my ESC to the battery, throttle stick at EP0 position which supposed to be 0% throttle, throttle trim tab at its lowest position but the motor spins. I nearly got chopped by the blades. I immediately turned on the Throttle Cut switch to cut the throttle in order to stop the motor from spinning, but when I turned off the switch the motor spins again. Is this a malfunction of the ESC? I haven't done any programming to the ESC yet, the ESC runs on its default setting. Please tell me what to do, thanks.