lab band to gastric bypass?

I have a lapband and have had it for almost four years, I have never been able to find the sweet spot, Im either too full or not full enough, I get heartburn and reflux and have to back down the fluid then have not restriction, I have had two upper GI;s the band has not slipped but the position has shifted, I was at 55 degrees horizontal and now at less the 40 degrees, I would like a revision but not sure if its needed or if there is something else I can do. I get food stuck even with the smallest of bites. I hate my band I have pressure in my abdomen most of the time. I either can or cant eat depending on the day. Im miserable, I have talked to the doctor and he has said that he doesn't know that revision is necessary but if he did revise it would e to gastric bypass ( he recommendation I should say). Need advise?