My upstairs shower drain is leaking. I narrowed it down to the leak is at the drain itself and not the pipes. The drain is an Oatey brass caukless drain. The white 2" pipe has about 1/4" verticle play, that is why I think the leak is there. I bought a new drain so I could see how it works (I am soooo hoping I don't have to remove the shower or ask the ex for assistance). The drain comes with a flimsy tool to screw and ring on the inside on the top. I used thsat tool to unscrew the one on the shower and it is starting to bend. It will not budge. What can I use to loosen it? Is the play in the pipe normal?