Hey Andy..how are you? From what I have read, as you lose weight, the fat around your stomach also decreases.. so that bit of fat that came between your band and stomach has probably gone bye bye.. hence the loosening.. so it is all very possible and sounds like it may be time for a fill. good luck
Yes - this happens all the time, that's why we have to keep getting fills. Because you have good restriction, lose some weight and the band loosens up. I can tell I need a fill when my food isn't lasting 4 hours.