Got the flat mouth piece, it is awesome. Much, much better than the other one. This one doesn't get hit AT ALL and is way easier to clean. I ended up destroying the raised piece just trying to clean it.
Unfortunately the dent from the fall has caused the piece to not fit 100%correctly, more like 98% and that other two percent is off just enough to let some air through. I don't think it is having much of an effect, I am decent at working with metal I think I can get the tiny dent out and solve the issue pretty easily.
Damage like that is probably not covered under the warranty, right? I doubt I would even take advantage if that if it was, just curious.