i have this waterer. i have 2 one is bigger than the other. Whenever i fill it even a quarter of the way full and remove the cap, the water shoots out and overflows. It does this until there is nothing left but in the red part. WHY??? The ground is level. It does this weather i put the cap on when i fill it or just leave it off and let the red thing fill as i fill it. NOTHING WORKS!! Help. Ps im not talking about it overflowing at the top im talking about it not automatically stopping when the water holder ( The red part) gets full!