The Fox Brolly systems are Brilliant IMO , but yes some have leaked like a colander ,mine and my mates have been fine but others have not faired so well , they are a bit like Marmite , you either love or loath them.Im in the Love camp
The new MK 2 versions are meant to be " much better " cant really comment as mine is a MK 1
Im sure some of the problems may be due to the fact that you can clip your short storm poles onto the ribs of the brolly when not in use , as this would rub on the inner fabric .
I have always unscrewed them as i could see a potential problem their.