Yep that was posted quite a few pages back I can't remember where. I 3D printed a replica in TPU, didn't really seem to accomplish anything.
You're right about the seal, or at least the angle of that picture, but it does look different slightly. I guess it comes from a different supplier so might be different slightly. I've heard from others though that this noise is still a problem on MIC Model Ys: I don't speak Mandarin so I don't understand,
but maybe someone here knows what he's talking about.