That metal plate with the hole in the center is supposed to be bent, It fits on both ways the wrong way lets it rattle, the right way keeps it tight.  Put the bend back in it and flip it over so it fits flush to the pipe and does not rattle.  I expect that's your problem.

David

Date:    Fri, 11 Jun 2004 21:31:06 -0700
From:    Craig Oda <craigoda@GMAIL.COM>
Subject: Fridge blowing out. Where to seal air leaks

So, I've taken ----Snip------?  The plate was bent a bit, so I took a
hammer and straightened it. ------Snip------ Do these develop air leaks?

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