At a friend's house, water comes out of the dishwasher air gap on the sink when the dishwasher drains. There are no clogs in the drain line from the air gap to the garbage disposal. The line is not kinked. The air gap itself is not clogged. The input hole to the dishwasher is not clogged. (We took the air gap and the drain line off and made sure they were clear before re-installing them.) Is it possible that the dishwasher just drains too fast for the air gap system? Do dishwashers typically have an adjustment that sets how fast they drain?