On my outdoor hot tub, I noticed water dripping from the hose going to the air inlet during the gentle water heating cycle. When I close the air inlet to allow no air to be drawn in with the jets, the drip stops. When open, the drip increases, naturally when I turn the jets on. This is a new problem. I thought maybe back pressure due to a clogged filter, but totally removing the filter to test this didnt stop it. Why would water back up into the air inlet? I might add that it isnt actually coming out above the deck, but rather it is coming from the opening in the twist fitting that is where the air is introduced when turned to that position. My next move will be to try to ascertain if any of the jets are clogged or not allowing proper flow. Am I on the right track? Has to be back pressure, right? (Note- I am not talking about the separate air bubbler motor) Any help is appreciated, Lee