Gbags,
Based on my experience - I think you need an unfill because you are too tight or your eating habits are causing you to irritate your band and swell.
I am struggling with the very same problem. I was filled in November and started experiencing these problems, so I had an unfill and the problems disappeared. So did my weight loss.
My last fill was in late January, and it was a very small fill. I do okay sometimes, but now find that unless I skip dinner and drink no fluids, I have aspiration problems at night. I am usually too tight to eat much during the day so dinner is the only meal I can really get solid food in.
I'm struggling with this. I keep hoping my fill will loosen up so I don't have to have an unfill. I don't want to get an unfill because I don't want to gain, but I don't know if I can realistically put up with this much longer. My husband is complaining about my coughing.
Think about what you are eating and if your eating habits have changed. If I am honest with myself, I have to admit that I may not be sticking to the rules as closely as I should. I have had a few rough days where I ate too fast, or ate the wrong thing and I have to vomit. That generally causes irritation and the result is a long night of aspiration and coughing.
I have only myself to blame when I don't use good judgement.
If my symptoms don't improve I will have my doctor do a partial unfill. I suggest you talk to your doctor about this, too.