Gastro-Gastric Fistula after VBG

Learned a couple of years ago that I have a gastro-gastric fistula. I had the VBG in 1986. I lost from 260 to 170 in the course of about 2 years. Then started gaining because it was easier to eat like I did before the surgery. Since then, back on the "diet wagon" fluctuating up and down with the weight. 7 years ago I went on the Atkins diet and did well - back down to 170. Now, nothing seems to work. Current weight is 207. Anyone else have the gastro-gastric fistula and have you been told it led to weight gain?