Haven't been on here in a while-- did you ever find the flaps? Issue resolved?
Sorry, short of pulling the panels on my own car-- which I HATE to do because of some nerve problems with my hands, I can't remember exactly where they are. My gut tells me they are just beneath the rear-most trim in the trunk, along the sides-- if you pop the trunk, and start removing panels-- you can't miss them.
It's not what you buy, it's what you build- Unknown
EN90283 - Stabled for HG repair
DH06247 - Running like a champ