Hi, so the other day my dad and I go to home depo to pick up a part for his shower (symmons type A) and the piece we were looking for was the handle that turns on the shower, it had been stripped. Well we took out the old one and put in a new one. It was so hard we couldn't turn it. Well we put wd 40 on it and now it turns fine but the shower never kicks on, the tube water keeps running. Help! Please!:)