I have a problem where the back windscreen washer jet seems to be blocked on our 107. The motor is definitely working but nothing is coming out. I have tried to remove the rear high level brake light (where the washer spray is built in) but after removing screws I found a sticky seal between the light and body and didn't want to disturb it unnecessarily. Anybody had this problem with a 107/aygo or c1? and located the blockage. Have checked the 107 forums but can't find anything.