my dual sink drains slow and when i wash dishes, i have to hold the stopper down in the wash sink when i am rinsing in the other one, because it bubbles up and knocks the stopper lose. when i use my garbage disposal it shoots groung food into the other side. i read where i should have a friend hole the rag in the one side while i plunge the other, but it did not work. can someone help me?:confused: