The torsion bars are zip tied toghether, so they are touching, but not moving. There was nothing preventing them from touching the trunk itself, so i put a few rags in there and that made zero difference to the noise occurring.
I am having the exact same issue, and I tried using the armor all wipes on all the rubber seals in the trunk but that hasn't made any difference. Perhaps I am missing something? Any help would be hugely appreciated. This is driving me nuts.