I have this also, but when I am hungry and when I eat. I am short and when they did an xray they saw the tubing touching my diaphragm. They said if necessary, the tubing could be shortened which should help the problem. I obviously am not too excited about another surgery but don't know if I can handle this discomfort forever.
Also, I am not really getting what I imagined as fullness, but I do have to stop eating because of the shoulder pain.