While I was doing that, I noticed this tear on both sides of the plastic frontpiece.
(I'm pulling on it in this picture, it actually seems to stay together and is very difficult to see otherwise).
I have no idea how long this was going on. This is the first time I've noticed it, but I also use a pad which covers it up most of the time. I'm curious to know whether anyone else has had this issue? I've had this for about two years now, so I'm just going to replace the whole thing, since there is no way to order this piece individually.