I have the same issue as well. I took it to Apple 4 different times, and the first two visits they basically told me that I'm hallucinating. On my third visit, they took in for repair and disassembled and rebuilt it but the noise was still there when I tilt it. I took it in again last week and they changed the top case, and guess what, the noise is still there. I asked for a new MBP to replace this one since the issue is not being resolved and I have brought it in so many times, but they refused to do anything more for me.