Ok, I have a OS 46ax that keeps dead sticking after about 2/3 of the tank has been ran through. I tried running it richer and then leaner but still the same. I changed all the feul lines thinking maybe a hole in a line and still the same. how high does the tank need to be mounted compared to the carb or needle intake? Do you think this could be what is causeing this engine to die? Its never really ran right, this is the only plane that its been on. Im thinking about moveing it to a different plane to try that.