When I turn on my shower, water still runs out of my bath tub faucet. Because of this, I'm trying to replace the diverter on my shower - it is it's own fixture (ie, there is a hot water handle, a cold water handle and a seperate diverter). The faucet is a Gerber faucet. I have purchased a stem removal wrench and I cannot budge the item. I'm turning the stem counter clockwise but I cannot seem to get the thing out of the wall. I've already purchased a replacement stem but I can't use it because I can't get the old diverter out of the wall. Any ideas?