Yes it is just the foam but sadly the first one that went was removed and over time has been misplaced,the other is still installed but missing the foam so my only option at this point is to find replacements.Incidentally I'm located in Toronto, which for most that live here is the center of the universe.Seriously though it's a huge city so I'm sure I could find something here,however I thought I would pick the collective brain on this board first.
~Jim