Hi, had back doors done under warranty for the leaking issue but less than 5 yrs later the drivers rear door is p****ing in water again, been to dealers who say it is the actual door seal, which i find hard to believe.... have took door panel off, the mastic they used looks ok, badly applied tho, so just trying to work out where the water is coming in cos after a trip tp wales the footwell was bloody soaked, it's took over a wk to dry including looking like a right wolly with a hairdryer to get it dry, but think i am there... now all i need is rain to find the culprut.... have used the watering can method but no signs anywhere, so wondering if anybody else has had this bugging issue

Door open, watering can over window, if no water appears at the base of the inner door card, it's the actual frame seal that's gone.