Last year i purchesed a pair of expensive Berghaus Goretex Paclite over-trousers. I wore them on half a dozen occasions mostly during the Spine.
Checking my kit for the next event, I found that the Goretex membrane has peeled off on the inside at the ankles, and a small hole too.
The Goretex repair centre recommended by Cotswold and Go Outdoors cannot repair them. it's no wonder Paclite is being discontinued.
They cost around 100.. and are the only overt-rousers I have ever had problems with, also by far the most expensive.
I have at this moment a tailor sowing patches of a similar waterproof, breathable material onto where they are affected.
I wont be spending big on o/t's again.