My dishwasher is collecting water back on the screen. there was some particles that i cleaned up already, but water is still backed up a little. i noticed the drain hose, is connected to our sink, and mostly to our garbage disposal under our kitchen sink. i can see water standing in the dishwasher and also in the drain hose. can you please, e-mail be back with some intructions or ideas of what i have t to. thank you.