It's an old thread but I was led here by cross-references. My faux wall is separating from the real wall and the screws won't bite/tighten up. When you did this work, could you see if the screws just go into the aluminum/styrofoam sandwich of the real wall, or is there something there that they screw into? Trying to figure out what I have to work with, to get these to tighten up.
Thanks!
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