I believe i am probably being a complete plank by asking this, but gonna anyway! i am trying to follow the advice given to remove the pollen filter, but i can't even get the two plastic things out of the foot facia, are you suppose to just yank it off with them in situ, i've tried allen keys, plyers but they just turn round I don't want to be too rough if i'm not suppose to. Please help a lady who is about to rip out all her hair, many thanks.