I have one, same design as yours but I had to remove it because my Easter eggers with shorter beaks than my Orpingtons weren’t getting enough water. It was late summer so it was very hot and they were only about 9 weeks, so I’m quite sure that may have had something to do with it. I found out by watching them, they were pecking at it but not hard enough I guess. Maybe they just needed more time and training with it, I don’t know, but because it was so hot I didn’t want to take any chances. Is it possible for you to get up close while they’re drinking to see how much is coming out? Hope it works out- I really love that type of waterer because it keeps the water clean longer. I’m constantly changing the water bowl!