Hi,
I have tried this advice regarding the door trim and although the panel will come off, as explained. The bolts that are under the trim do not seem to do the same job on the late model SL However I did findout that you can adjust the window drop by removing the silver plate at the top of the door and making adjustments to the medium screw that is hidden under the rubber flashing.
Update I have spoke to MB about this and they have said that the problem is most likely to do with the trim around the complete edge of the hardtop and the matching one on the top of the windscreen running round the A pillar