I removed those eight plastic rivets w/o damage using the followng technique:

Use a small flat blade screwdriver, pry each rivet up just a bit, and then loop a piece of string underneath the rivet. Using your finger to keep the string in-place, pull on the string and the rivet will pop right out.

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Tom Latos
2002 E320
1995 E320 Sold at 288kmiles