Ok, I have a quick question. I got my H back from support and they changed out the GPS board. I flew it for the the first time this morning and it seemed fine. I was a little afraid to go very far because I'm still paranoid about getting the flashing yellow light and vibrating control. All seemed ok...my question is, as I land the H and wait for motors to come to idle, I push the stop button and notice a very quick yellow light before they continue to flash purple and white. Is it normal to get this quick flash of yellow light when we power off? I can't remember if it's normal and like I said, I'm still a little paranoid. Thanks.