Guys, I am grateful to my good friend Bruno (famous E-34 website)who found a nice replacement trunk seal for my 90 735il. The question is...to replace the rear trunk seal there are a no. of rivets holding down the facia over the rearward part of the trunk seal. I need to remove this plastic facia to pull off the seal. I have run into these plastic rivet like fasteners before. They have a ferrule with lip that holds the facia down and a center mandrel that expands to hold the little ferrules in place. The center mandrel is flush with the top of the ferrule. Do I push down on the center mandrel?..to disengage the ferrule so I can get the ferrules off to remove the facia? No undercut or groove to pry the mandrels out from the center of the ferrules so presume you push down to disengage these fasteners? Thanks for any advise. George 90 735il/145k