I have the standard beesting aerial on my passat b5 and I want to replace the base part as the seal around it has perished. I'm assuming the interior roof lining and quite a few other bits of trim must be removed to get to it.

Just wondering if anyone has done this?? Ceiling lining is notoriously difficult to remove and I don't want to be left with saggy bits of mis-fitting trim! I have the replacement base and its only held in by one fairly large nut, its just getting to that nut!!

Any thoughts...?