One thing I am reading is that when you are just tight enough, the band gets you feeling full with a little food and then keeps you from getting hungry.
If you get to the point that you are waiting a minute between swallows and are chewing really well with the band being just tight enough, the weight will fall off.
I am currently hovering close to the green zone and I will tell you that the lack of hunger is an amazing feeling. I was too tight for the last 2 weeks of December and while I was not getting hungry, the staying on liquids and PBing was not fun, did loose 9 lbs in the two weeks though.
I find that if I am eating when hungry, taking in Protein and zero calorie fluids and exercising for an hour at least 2-3 days a week, I will loose weight rapidly.
Keep getting regular band fills, if you are too tight ask the doctor to take a little Fluid out and go slow with the fills as your eating style and your body need to adjust to the fill. If you manage to take in your protein and drink fluids you will loose weight.
Best of luck!