Hmmm,

Now I understand. I went out and checked, and my cross bracing is secured to the top sheet metal of the trunk lid by what seems to be a thin layer of adhesive or a sealant of some kind.
Also, there may be a nearly paper thin gasket-like material between the layers of metal. What ever is there between the lid and cross braces gives slightly to fingernail pressure, and doesn't seem any thicker than a fingernail
There is no loose metal to metal contact anywhere under the lid.
Hope this helps.

__________________
They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. Benjamin Franklin, A.D. 1759

Roger
1975 240D
1986 560SL