Hello... I have recently encountered a problem with my shower. When I pull out the diverter button to change from bathtub to shower mode, I noticed a considerable amount of water coming out behind the faucet. This does not appear to be the case when it is simply on "tub mode". Could it just be a faulty spout/diverter? I unfortunately have no way of getting in behind the wall due to tile and both of my showers backing up to each other.