I had to repair the upper sill panel towards the back, under where the sliding door closes (above the rear end of the chrome passenger side bar) Don't quite understand why the rust was appearing on the
out-facing part of the panel though!
The underneath was perfectly solid!
... I would have thought that the water would have sat in the
bottom?... Before replacing the metal - and after cutting out the crap bit, I squirted loads of good old Waxoyl into the void! Stank for a couple of weeks, but now smell has well gone, it should be good for quite a long time again! Top tip!