I just bought a house and it has the Caretaker 99 pop up cleaner system. The only pop up that semi-works is the one on the first step. All of the other pop ups stay completely flush with the floor of the pool. I was wondering if the gearbox could be the problem or if it is just a crappy system that gets bad reviews and I should just abandon it completely until we get the floor of the pool redone. The pressure valve at the gearbox looks really old and it only says that there is 7 lbs of pressure when the pump is on. I admit that I don't know much about pools or there cleaning systems but I am more that happy to learn. I appreciate any help that I could get with this matter. Thanks