Newbee here. Just purchased a used 2007 Mule and took it out and climbed some hills in the pasture. When I would stop on an incline for any length of time it would die (I believe for a lack of fuel.) I would have to move it to a level area to get it to re-fire. The gauge shows over a half tank so I am hoping that keeping it nearly full will remedy this problem as I frequently stop on hill sides to spray trees, etc. Anyone have any thoughts?