My trans am does it on some pumps. I think it's just the angle of the tube. Gas nozzles sense when the tip is being splashed on or when too much pressure builds. If this helps at all, maybe you can find a happy medium angle?
I also noticed that pumps in ATL tend to pump a LOT faster than pumps out here in Athens. Makes sense, since there's way more cars in ATL, but that's where I usually run into probs with the trans am, since it's just going too fast lol. If you can't find a good angle, just gotta sit there and hold the trigger a little loosely so the gas goes slower. Sucks, but ya gotta get gas in somehow lol.