Ground plates change #replacement

ste.dente
 

Dear Amelians,
I’m mounting a SSB radio on Euploia. It seems to the technician that the ground plate is old and too “smooth” to grant a good conduction; he thinks it would be better to change it. Someone of you did that? Is it sufficient to unscrew the four screws or should I pay attention to something special to be done? How is the plate hold in site?
Thanks a lot to anyone could contribute
Stefania e Dietmar
Euploia SN #93
Italy 

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