To put it bluntly, they don't give a toss. Mine were straight out the box and the adjuster clips were broken. I sent them an email straight away with pictures and they got back to me saying it was my fault and they didn't want anything more to do with it.
I've sent several emails since to no avail. In the end I gave up and fixed them myself which I wasn't happy about.
Lesson learnt though for me. I will never buy from them again, strictly UK companies now. Sorry it doesn't reall help mate. Good luck.