i can't for the life of me get my gy401 setup properly. when i'm in idle up with head hold on my heli wants to drift left. not alot but its there and its constant. i'm using it with the 9650 digital servo. do you slide the servo holder towards the nose of the heli? do i increase my gain? or both? i've watched finnless bob countless times. and still can;t get it right. its like he's talking chinese. i'm not that technicall with heli setup. can someone explain in detail for idiots like me to understand?