I fixed my issue also, it was the xpipe hitting the cross member. I disconnected the rear exhausts and the section that connects to the xpipe. re-aligned it and used high temp silicone to seal and no more rattling issue.
But I wanted to see pictures of others with this exhaust because it seems that the passenger side hangs lower than the right no matter how straight the connections were made and how far pushed in I put the hangers on the exhaust.
Mine use to hang visibly lower on the right but since I re-aligned everything to the best that it could be its not as bad but you can tell if you looked really hard
