This is a customer's in ground spa. They were wondering why there was so much bubbles coming from one jet causing the water to spill out onto the deck. My first inclination was that maybe the jets were in series and that one was first. However, upon closer inspection, I see that one of the directional eyeballs is missing from the return jet in question. Can this be repaired by an unskilled induvidual like myself or should they level their home and start again?