Leaderboard

That's how I ended up tracking the leaks down myself Simon, stripped out the headliner & rear interior & had the hose pipe on to pin down where it was getting in, turned in to a huge lot of work, but well worth it in the long run, also did the headliner while it was out as like most it was not in great condition & on removing it, it just started peeling away, new skill learned though, but it's not a simple job with all the holes & countours on the deck headliner, I'm sure a regular MB withut a sunroof would be pretty easy in comparrison.

I hope you get a handle on it Simon, water getting in can really be the death of these