I don't have a hard top, so I can't comment there.
I'm having a little trouble understanding what you're asking. If you post pictures, it would probably help.
I believe you're referring to your "door surrounds," which are those four black plastic pieces that attach to your roll bars above your doors. The front two pieces are straight, and the rear two pieces are "L shaped". Is this correct?
Assuming so, the four pieces on my 2010 attach with only four knobs. One knob goes through each of the front pieces up by the windshield and screws into the roll bar, and another knob goes through both the front and rear pieces where they overlay on top of each other near the seam between the front and rear doors.
Does this answer your question?