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Check the bag for leaks. Seal the bag with some air in it. Submerge it in water and apply pressure. Bubbles indicate a leak. If the bag has a leak, you need to use a new bag. If using a custom-sized FoodSaver Bag, check the seal of the bag. There may be a wrinkle in the bag along the seal, which causes leakage and prevents air from being removed. Cut the bag and reseal the edge. Do not attempt to make your own side seams for a FoodSaver Bag. They are manufactured with special side seams, which a