I will keep that in mind. I do have 15% fuel too. I guess what upset me is my heli would atleast take off and fly for a bit with 30%, but with 15% it would not even lift off of the ground. I would adjust the high end valve and still nothing at all. I am sure there is something I am doing wrong. I am sure both valves have to be in a certain spont and not off by a hair or it wont work right. I guess I will just keep tuning. I need to tune until I get smoke, because I am just not getting any smoke. I mean a little bit but not much.