I try everything to make the cup go down but it seems like there is a camber stopping me from pushing it further down. Ok, there is three camber in the skimmer, the left which is the one that intake the water, the middle is the one that produces the bubbles, and the right one is the one that discharges the water. The one to the right is the highest one so it is preventing me to push the cup downward. The cup stick out about 1inch or a little bit higher. It odd, one side of the cup seems to be higher than the other side. When I flash my flashlight at the cup, I do see tiny fine bubbles arising from the tunnel, is this a sign that I have installed everything correct and my skimmer is functioning correctly? There is no way the cup will be overflow, the big bubbles are being created almost near the bottom of the tunnel that leads to the cup even with the lowest setting. Is this normal?? I wish I could post a picture so you guys know what I am talking about, but I can't upload it to the site.