stained A pillar tried the search function

Ok , recently bought a 1998 156, now the car has a stain on the interior trim on the passenger A pillar.

Today I noticed the trim was wet, so pulled the trim out and then I get drips from inside the rooflining, opened the sunroof and checked the drain, seems clear it certainly drained the water i poured inside the tray.

So question is , other than the double skin roof section which i've found mentioned on a thread using the search function, should I be looking at the door seals? can't see how the water would get into the lining from there but someone on here must have a list of common leak spots.

I may have to remove the roofliner as the sunroof lifts before being fully forward so guessing its out of synch, but only want to drop the liner once if I can

cheers

Keith