Had my car in storage for the last 6 months so am spending quality time giving everything a going over. Noted that the boot gaskets had pulled off the track on the forward edge. A bit of silicone window gasket sealer on the metal and pushed everything back in place. Last year was remarkably filthy back there and I'm hoping this simple fix will help the dirt level. I think that the airgaps that occurred caused more air to be sucked out of the boot through the top and in doing so sucked more road mung in from the rear tire directly below. I gave up carrying anything that required cleaning there as everything came out filthy. I've also noticed quite a bit of road dust coming out on the top where the roll bars come through.
There's a lot going on with this car! With over 50,000 miles I'm seen most of it!