If I had to guess based on your description you are eating too fast. You are filling up your pouch before it has a chance to start emptying your food below the band.

Slow down, chew well and in case you are doing so...don't drink any liquids immediately before and after eating.

Try that for a few days and see if it helps.

__________________
Starting Weight February 2006: 392
Current Weight: 217
Total Lost Since February 2006: -175
Banded April 2006