I built a jet and it flies great. I take off and fly south toward the south pole. Before I ever get there probably 35-40 minutes into my flight the plane stops responding to the elevation controls and just nose dives into the water. I have fuel I have fuel flow I'm creating thrust with my 4 Panthers and my rudders and control surfaces are all working. I can watch them move but it's like the air and lift ignore it. Whether I have SAS on or not the plane can't get anywhere near the southern continent. Does anyone have a work around or solution for this? I'm assuming this is a bug since other people have definitely flown to the south pole before.