EDA04510-V1-0_misc2 (Mezzanine Card Support) should not be FR4
The Mezzanine Card Support mechanical part EDA04510-V1-0_misc2 is described to be manufactured from 'FR4 Halogen Free, according to IPC-4101/127'. In fact it should not even be manufactured as it is the part 05.60.422 by Ettinger.