We have installed a new tub and shower faucet durring our renovations. When turning the water on (on the faucet itself), it only dribbles out water. We have tried to adjust the water flow nuts. We even had the faucets company send out a new carcrige, to no avail. We do have an unrestricted water flow to the faucets manifold. It still just dribbles out. It is a single swivel handle (does not lift). Any help is appreciated.