i know this may sound a bit harsh, but considering it's a dangerous surgery - why go through it again if it didn't work?? It only works if you can disconnect from food as your "drug of choice' and that often means years of therapy, setting up a strong boundry system, commiting to daily exercise and recoginizing that even with the surgery - you have a lot of personal responsibility to keep the weight loss off and prevent the gastric pouch from stretching. I have heard some people repeat the surgery - with the same dismal results the second time around - becuase they can't "fight the food battle." it's also quite costly and insurance will never cover it a second time.
I would recommend geting long term help from a therapist who works with these issues and spend the money on a trainer and dietician, who along with the therapist can hopefully help you to resolve your lifestyle issues.